"Is there something similar, to cheat on the differential (for a while, that is), make it work a little tighter? Appreciate."
A couple of bananas, mashed up, and put in the differential will do it, according to my dad, who used to work for his dad, who had a used car lot. The mechanic who finally has to fix it will be looking for your a$$ after he opens it up, though. I'd wanna leave town after selling it, was I you.
Thanks. I'll probably just limp along, till I'm forced into the repair.