diff --git a/src/PropertyT.jl b/src/PropertyT.jl
index aa0036e..bea4df1 100644
--- a/src/PropertyT.jl
+++ b/src/PropertyT.jl
@@ -21,31 +21,36 @@ import MathProgBase.SolverInterface.AbstractMathProgSolver
 struct Symmetrize end
 struct Naive end
 
-mutable struct Settings{Gr<:Group, GEl<:GroupElem, Sol<:AbstractMathProgSolver}
+struct Settings{T} where T<:Union{Symmetrize, Naive}
     name::String
-    G::Gr
-    S::Vector{GEl}
+
+    G::Group
+    S::Vector{GroupElem}
     radius::Int
 
-    solver::Sol
+    solver::AbstractMathProgSolver
     upper_bound::Float64
     tol::Float64
     warmstart::Bool
 
     autS::Group
 
-    function Settings(name, G::Gr, S::Vector{GEl}, r::Int,
-            sol::Sol, ub, tol, ws) where {Gr, GEl, Sol}
-        return new{Gr, GEl, Sol}(name, G, S, r, sol, ub, tol, ws)
+    function Settings(name::String,
+        G::Group, S::Vector{GEl}, r::Int,
+        sol::Sol, ub, tol, ws) where
+        {GEl<:GroupElem, Sol<:AbstractMathProgSolver}
+        return new{Naive}(name, G, S, r, sol, ub, tol, ws)
     end
 
-    function Settings(name, G::Gr, S::Vector{GEl}, r::Int,
-            sol::Sol, ub, tol, ws, autS) where {Gr, GEl, Sol}
-        return new{Gr, GEl, Sol}(name, G, S, r, sol, ub, tol, ws, autS)
+    function Settings(name::String,
+        G::Group, S::Vector{GEl}, r::Int,
+        sol::Sol, ub, tol, ws, autS) where {Gr, GEl, Sol}
+        return new{Symmetrize}(name, G, S, r, sol, ub, tol, ws, autS)
     end
 end
 
-prefix(s::Settings) = s.name
+prefix(s::Settings{Naive}) = s.name
+prefix(s::Settings{Symmetrize}) = "o"*s.name
 suffix(s::Settings) = "$(s.upper_bound)"
 prepath(s::Settings) = prefix(s)
 fullpath(s::Settings) = joinpath(prefix(s), suffix(s))
@@ -72,57 +77,53 @@ filename(prefix, s::Symbol) = filename(prefix, Val{s})
     end
 end
 
-for T in [:Naive, :Symmetrize]
-    @eval begin
-        function check_property_T(::Type{$T}, sett::Settings)
+function check_property_T(sett::Settings{$T})
 
-            if exists(filename(prepath(sett),:pm)) &&
-                exists(filename(prepath(sett),:Δ))
-                # cached
-                Δ = loadLaplacian(prepath(sett), parent(sett.S[1]))
-            else
-                # compute
-                Δ = computeLaplacian(sett.S, sett.radius)
-                save(filename(prepath(sett), :pm), "pm", parent(Δ).pm)
-                save(filename(prepath(sett), :Δ), "Δ", Δ.coeffs)
-            end
+    if exists(filename(prepath(sett),:pm)) &&
+        exists(filename(prepath(sett),:Δ))
+        # cached
+        Δ = loadLaplacian(prepath(sett), parent(sett.S[1]))
+    else
+        # compute
+        Δ = computeLaplacian(sett.S, sett.radius)
+        save(filename(prepath(sett), :pm), "pm", parent(Δ).pm)
+        save(filename(prepath(sett), :Δ), "Δ", Δ.coeffs)
+    end
 
-            files_exist = exists(filename(fullpath(sett), :λ)) &&
-                exists(filename(fullpath(sett), :P))
+    files_exist = exists(filename(fullpath(sett), :λ)) &&
+        exists(filename(fullpath(sett), :P))
 
-            if !sett.warmstart && files_exist
-                λ, P = loadλandP(fullpath(sett))
-            else
-                warmfile = filename(fullpath(sett), :warm)
-                if sett.warmstart && exists(warmfile)
-                    ws = load(warmfile, "warmstart")
-                else
-                    ws = nothing
-                end
+    if !sett.warmstart && files_exist
+        λ, P = loadλandP(fullpath(sett))
+    else
+        warmfile = filename(fullpath(sett), :warm)
+        if sett.warmstart && exists(warmfile)
+            ws = load(warmfile, "warmstart")
+        else
+            ws = nothing
+        end
 
-                λ, P, ws = computeλandP($T, Δ, sett,
-                    solverlog=filename(fullpath(sett), :solverlog))
-                saveλandP(fullpath(sett), λ, P, ws)
+        λ, P, ws = computeλandP(sett, Δ,
+            solverlog=filename(fullpath(sett), :solverlog))
+        saveλandP(fullpath(sett), λ, P, ws)
 
-                if λ < 0
-                    warn("Solver did not produce a valid solution!")
-                end
-            end
-
-            info("λ = $λ")
-            info("sum(P) = $(sum(P))")
-            info("maximum(P) = $(maximum(P))")
-            info("minimum(P) = $(minimum(P))")
-
-            isapprox(eigvals(P), abs.(eigvals(P)), atol=sett.tol) ||
-                warn("The solution matrix doesn't seem to be positive definite!")
-
-            @time Q = real(sqrtm((P+P')/2))
-            sgap = distance_to_cone(Δ, λ, Q, wlen=2*sett.radius)
-
-            return interpret_results(sett, sgap)
+        if λ < 0
+            warn("Solver did not produce a valid solution!")
         end
     end
+
+    info("λ = $λ")
+    info("sum(P) = $(sum(P))")
+    info("maximum(P) = $(maximum(P))")
+    info("minimum(P) = $(minimum(P))")
+
+    isapprox(eigvals(P), abs.(eigvals(P)), atol=sett.tol) ||
+        warn("The solution matrix doesn't seem to be positive definite!")
+
+    @time Q = real(sqrtm((P+P')/2))
+    sgap = distance_to_cone(Δ, λ, Q, wlen=2*sett.radius)
+
+    return interpret_results(sett, sgap)
 end
 
 Kazhdan(λ::Number, N::Integer) = sqrt(2*λ/N)
diff --git a/src/laplacians.jl b/src/laplacians.jl
index 313e83a..ff7e238 100644
--- a/src/laplacians.jl
+++ b/src/laplacians.jl
@@ -62,7 +62,8 @@ end
 #
 ###############################################################################
 
-function computeλandP(::Type{Naive}, Δ::GroupRingElem, sett::Settings, ws=nothing; solverlog=tempname()*".log")
+function computeλandP(sett::Settings{Naive},
+    Δ::GroupRingElem, ws=nothing; solverlog=tempname()*".log")
     info("Creating SDP problem...")
     SDP_problem, varλ, varP = SOS_problem(Δ^2, Δ, upper_bound=sett.upper_bound)
     JuMP.setsolver(SDP_problem, sett.solver)
@@ -73,7 +74,8 @@ function computeλandP(::Type{Naive}, Δ::GroupRingElem, sett::Settings, ws=noth
     return λ, P, ws
 end
 
-function computeλandP(::Type{Symmetrize}, Δ::GroupRingElem, sett::Settings, ws=nothing; solverlog=tempname()*".log")
+function computeλandP(sett::Settings{Symmetrize},
+    Δ::GroupRingElem, ws=nothing; solverlog=tempname()*".log")
     pdir = prepath(sett)
 
     files_exist = exists(filename(pdir,:Uπs)) && exists(filename(pdir,:orbits)) && exists(filename(pdir,:preps))