If pounding up and down on the axle hasn't damaged things beyond fixing now (the spindle for instance) a few more miles probably won't hurt, but think about what's happening every time you hit a bump! Don't wait much longer!
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!