Originally Posted by unterhausen

The bending you get with heat means something is getting shorter. I really would be interested in knowing how this happens, maybe I'll cut something up and polish it and look at the grain structure.

Since installing the bosses means you mainly heat the inside of the stay, have you heated the outside of the stay? Start by heating the outside of the stay and finish by heating the outside of the stay. Doesn't help much to get it red hot.