For the fender rolling, get it nice and warm (not too hot to burn the paint) and go slow. Stop to make sure the roll/pull is coming out evenly once and a while during the process. Make sure to thoroughly clean out the inside of the fender lip area where you'll be rolling it flat and fill it with some grease/rust proofing beforehand to ensure they don't rust out from making contact/cracking paint on the inside.Do you have any experience with running those bolts you quoted earlier in this thread ? I looked into purchasing them and found nothing but negative reviews saying they do nothing. And I already bought a fender roller. It was the same price as having someone in my area do it for me. Any tips and tricks on rolling the fenders ? Other than heating the surface prior to rolling.
I personally haven't used these particular bolts, but I have friends who have and they've been fine with them. They definitely do make a difference if they're set up/installed properly.