Not wanting to jump planes, but, I have the Var 33-25.4 shop size head stem threader and and crown race cutter. I've found several of my French 531 steer tubes have a slight bulge where the stem wedge was pulled too tight. The Var guide, 2 1/2 inches long will not slid over the bulge in one case and another couple were a force slid, not a hammer use deal for sure. After they get by the bulge, it loosens back up. Is there any way to shrink these bulges with out replacing the tube? Thanks, Dickey Greer West Monroe,LA ~ USA