BSA fork tube bent .107″ . Straightened in a press using a non metallic block bored and cut in half to set on the tube properly. The blocks material does not allow it to deflect or crack while moving the tube the proper depth so it will end up straight. First the tube is spun on supports to find where it is bent and then mark the high and low spots. It takes a few times to figure out the extent of deflection needed to straighten the metal while not going to far.. Finished up with .002″ t.i.r.