XTR deraileur with LX shifters?? could u mean XT? Id believe that.
meanwhile...bring it to a local shop and pay 20$ or whatever to have them tune up ur bike, its really worth it. And if its either XT or XTR, its a legit deraileur, pretty dam bulletproof, so id keep it, just adjust it, but check out the wear on the chain or the cassette as well, because if the guy just put on a new deraileur to sell it but left on the old chain, cassette, and chainrings, u might have gotten fucked.
BTW the mechanical Avid disc brakes are legit too, theyre alot easier to maintain than the Juicy 5s or 7s, and u can manually adjust the pads with the dials.
-What have you got in here, rocks?
-Are you kidding? When I was your age, l would lug fifty pounds of ice up five,
six flights of stairs!
-So let's dance!
my zucchinis carresses your carrots.