There you go misquoting me again. I didn't say "sometimes not" about machining a drum. I said NEVER. I rebuild torqueflites for $400 hard parts included and even a cheapskate like me knows that it's just plain stupid to stick a worn out drum back into a trans; machined or not. I throw them into the junk pile and I would never advise anybody to machine one. That's just bad info that will cause that trans to fall out of third gear on a hot day.