Originally Posted by FLYcrash

I'm going to vote for either nothing or frame damage.

I don't know anything about Al/Sc alloys, but 400 degrees F is not a lot of heat metallurgically speaking. If it were enough to soften the metal, I would be frightened to powder coat at all, as this would probably anneal the desired strength out of the metal. Many modern metal alloys are out of equilibrium when they have their desired properties. That's why they need complicated treatments - heat treat, quench, temper, etc. - to work correctly.

I often machine aluminum at work, and from what I've seen of it, it doesn't retain much strength once bent. I seriously hope that you can work down the OLD of the Alfine and get by springing the triangle open a few mm if at all. I strongly recommend against pushing the triangle open to 140mm.