People can get them real straight.
I got my set of 250SX forks within .008. But, the 200X rear axle I couldn't get any better than .020, it seemed to have had more than 1 bend. I just use a hydraulic press with the fork tube mounted on V blocks I made of wood and the ram pressing on a steel machined V block and into the bending area. Ya have to bend past straight to remove a bend because the metal really flexes and bounces back after pressing.
Thought of using a lathe chuck to hold the end but I think the jaws would score it up and mess the seal area up.
One time I didn't use V blocks - which support more of the outside surface area - and I ended up making the leg a bit out of round or ovalled. It was hard to get back round again so now I use the V blocks.
Oh yeah, and you need some type of dial indicator to see where you need to bend it back. Mark the high spot with a sharpie and bend away
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country