I have a 97 GSR tranny. The 4th and 5th gears of both the main and coutershaft are almost completely rounded off. I wantted to know do i need to replace the syncros? How do i tell if the syncros are bad? Can i just replace 4th and 5th? so a total of 4 gears are needed to be replaced right? I think they run about $100 per gear right? Does anyone konw about this? Transmisson stuff. Give me a good answer so i know what exsatly it is i need to buy for this tranny? please