I posted a reply to your thread over on the Bullet doug but I don't know about teeth bend, "tightening it up" so to speak.....Has anyone else on here ever seen that? I would think breaking would be soon to follow. I have not and like I have said many times I beat the living snot out of my Dana with a trans brake now with 1.19 60 fts. and have used Motive, Richmond and other gear sets.
I have ran my backlash loose too I might add. .010-.012 at times on old worn gearsets.
Foobraking should be so much easier too. The gears would last twice as long you would think.