The bars that Dave was bending where some 1” over sized haros, probably not heat treated. I was doing this to odyssey Gouin bars. I couldn’t get any minimal sweep ones so I did it to the 6 degree back ones. Changed them to 2 degrees. I would think heating up something already heat treated would cause problems, but it didn’t. I like the idea with using sand, Daddycool. I bet with or without heating them up, the sand would definitely help. I’ll give that a go if I need to ever do it again.