It would take some very sophisticated holding fixtures to do an off-frame axle bend, such as the ones a "drop axle" shop uses. Plus, how would you know for sure that the correction was correct without reassembling everything?
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!