I did basically the same thing with a helmet I had and it toppled to the floor. I think the only difference is that I didn't delete the welds for the head and neck. One other thing I did though was to remove the deforming channels from the CR2 in place of turning the bend property off. That shouldn't have had an effect on the conforming, I've done it before. I'll start fresh and see if I can get it to work by removing the welds as well.