I had a bit of a get off, last night. A car turned in front of me, and I couldnt get my foot out in time. I lightly dropped the bike on it's right side, and it barely even touched the ground. Since then, the derailler rubs the spokes lighty, when Im on the largest cassette ring. How do I readjust it, to stop the rubbing. It seems like it isnt shifting as quickly now too. Is it bent, or can I simply adjust it? Thanks for the help.
It sounds like you may have bent the rear dérailleur hanger or the dérailleur pulley cage. In either case, I would take it to your favorite LBS and have them check it out and fix as necessary. It doesn't sound like just an adjustment.