Frez2k

when i let off the gas pedal in gear and let the car decelerate I hear an odd grind like sound under my car where the tranny is, not very loud, but enough for me to hear it. the grinding is a little louder the higher the rpms are during deceleration. also a slight grind i have when i go into 2nd gear from 1st, not notchiness, just one little grind, that goes away when i have driven 30 minutes, but a grind from 2nd to 3rd only goes away if i shift like so (from 2nd..clutch then i halfway shift into 4 before then going up to 3) or shifting into 3 very quickly, I know these are 2 separate issues, but they could be linked? I have a 2003 with 43k on it. Thanks