I've done it with handle bars.
I tried to bend them cold and the steel just sprang back. Steel starts to weaken a long way before red heat and I took advantage of this to bend handle bars at bluing temperatures of 300-400 Deg C. It worked and you could feel the metal bend because the spring had gone out of it. Most of the bluing polished out but I wouldn't say the finish was perfect. It didn't matter in my case as that part of the handle bar wasn't visible.
Might be worth a try using a minimum of heat to see if they will move.