every time I shift in second gear it always make the sound like gear and gear scrape together.... I hate that noise... don't know what could've caused it, but I think it's the syncro on the second gear...... Anyone know how to fix this problem?... and how much would it cost?....... I just changed the gear oil redline mt90 .... not yet change the rear differential though.... first is no problem... second problem... and from 2nd on no problem with shifting....well if drive for a long time then shifting in second doesn't make anymore sound.... weird....