diff --git a/engine-proto/gram-test/tetrahedron-radius-ratio.jl b/engine-proto/gram-test/tetrahedron-radius-ratio.jl
index 957f031..9e79c05 100644
--- a/engine-proto/gram-test/tetrahedron-radius-ratio.jl
+++ b/engine-proto/gram-test/tetrahedron-radius-ratio.jl
@@ -62,13 +62,13 @@ guess = hcat(
     1  1 -1 -1  0    0
     1 -1  1 -1  0    0
     1 -1 -1  1  0    0
-    0  0  0  0 -1.5 -3
-    1  1  1  1 -0.5 -1
+    0  0  0  0 -1.5 -0.5
+    1  1  1  1 -0.5 -1.5
   ] + 0.2*Engine.rand_on_shell(fill(BigFloat(-1), 6)),
-  Engine.point([-1, -1, -1]),
-  Engine.point([-1,  1,  1]),
-  Engine.point([ 1, -1,  1]),
-  Engine.point([ 1,  1, -1]),
+  Engine.point([-1, -1, -1] + 0.3*randn(3)),
+  Engine.point([-1,  1,  1] + 0.3*randn(3)),
+  Engine.point([ 1, -1,  1] + 0.3*randn(3)),
+  Engine.point([ 1,  1, -1] + 0.3*randn(3)),
   BigFloat[0, 0, 0, 0, 1]
 )
 frozen = vcat(