Those teeth don't look bad at all. most of them have the right angle, and there's very little chipping on the ones I can see. Also look at the internal splines on the sliding collar that meshes with them- - - -the leading edges of those teeth should look similar, with a minumum of wear.
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!