Drive a small chisel into the gap in the sleeve to spread it out a little. You should not be shaving metal off the male threads like that. Even if you do manage to force the threads together, they will end up getting galled and seizing up if you continue to force the issue. Also, get a tube of anti-sieze compound from your local parts store and use it liberally.
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!