I went and looked at a 77 320i with bilstiens, Recaros and 127,000 miles. Its so clean! It runs real good and its fun to drive. The only thing i noticed was when shifting in to second above 35k it grinds into gear if under 35k its fine. also it does the same going from 3rd to 2nd. Its a stock 4 speed. Could it be a syncro? What could it be? Please help me?