XNA bounding spheres won't display in correct location - animation

Question

I am trying to get bounding spheres to display correctly for my models so I can see what is happening when I do collision tests. I cannot get the bounding spheres to draw in the correct location. The models look fine. I believe the problem is in the transformation step for the bounding spheres. The sphere itself is a simple .x file with a radius of 1 unit (in boundingSphereModel). I then scale it to the actual mesh's bounding sphere radius. I do have spheres with various radii but they all display in a clump at the feet of the player instead of over the various body parts. What am I doing wrong?
Here is my code:
private void drawPlayer(Matrix viewMatrix, Player player)
{
SkinnedModel skinnedModel = player.getModel();
Matrix[] boneTransforms = new Matrix[skinnedModel.Model.Bones.Count];
skinnedModel.Model.CopyAbsoluteBoneTransformsTo(boneTransforms);
Matrix transformationMatrix = player.getWorldTransformation();
foreach (ModelMesh modelMesh in player.getMeshes())
{
if (drawBoundingSpheres)
{
int boneIndex = modelMesh.ParentBone.Index;
Matrix boneTransform = boneTransforms[boneIndex];
GraphicsDevice.RenderState.FillMode = FillMode.WireFrame;
Matrix scaleMatrix = Matrix.CreateScale(modelMesh.BoundingSphere.Radius);
Matrix worldMatrix = scaleMatrix * boneTransform * transformationMatrix;
// loop through all bounding sphere's meshes, transforming & drawing them
foreach (ModelMesh boundingSphereModelMesh in boundingSphereModel.Meshes)
{
foreach (ModelMeshPart meshPart in boundingSphereModelMesh.MeshParts)
{
BasicEffect basicEffect = (BasicEffect)meshPart.Effect;
basicEffect.World = worldMatrix;
basicEffect.View = viewMatrix;
basicEffect.Projection = cameraProjection;
// configure lighting
basicEffect.AmbientLightColor = new Vector3(0.1f);
}
boundingSphereModelMesh.Draw();
}
// done with bounding spheres; switch back to solid fill mode
GraphicsDevice.RenderState.FillMode = FillMode.Solid;
}
// draw model mesh
foreach (ModelMeshPart meshPart in modelMesh.MeshParts)
{
SkinnedModelBasicEffect basicEffect = (SkinnedModelBasicEffect)meshPart.Effect;
basicEffect.World = transformationMatrix;
basicEffect.Bones = player.getBones();
basicEffect.View = viewMatrix;
basicEffect.Projection = cameraProjection;
basicEffect.Material.EmissiveColor = new Vector3(0.0f);
basicEffect.Material.DiffuseColor = new Vector3(0.8f);
basicEffect.Material.SpecularColor = new Vector3(0.3f);
basicEffect.Material.SpecularPower = 8;
basicEffect.NormalMapEnabled = false;
basicEffect.SpecularMapEnabled = false;
// configure lighting
basicEffect.AmbientLightColor = new Vector3(0.1f);
basicEffect.LightEnabled = true;
basicEffect.EnabledLights = EnabledLights.Four;
basicEffect.PointLights[0].Color = LIGHT_COLOR;
basicEffect.PointLights[0].Position = COLOR0_POSITION;
basicEffect.PointLights[1].Color = LIGHT_COLOR;
basicEffect.PointLights[1].Position = COLOR1_POSITION;
basicEffect.PointLights[2].Color = LIGHT_COLOR;
basicEffect.PointLights[2].Position = COLOR2_POSITION;
basicEffect.PointLights[3].Color = LIGHT_COLOR;
basicEffect.PointLights[3].Position = COLOR3_POSITION;
}
modelMesh.Draw();
}
}