My first MB 81 240D sedan immaculate (for now) and I'm as tickled to find this forum as I am to be the proud new owner. Four spd. shifts fine 1 & 2 - 3 & 4 a little grind. Will engage but must wait for rpm's to drop to minimize grind noise. Suspect synchromesh gears. QUESTION is there one for each gear and are they adjustable or loose or worn? Down shift fine to 2nd @ higher rpm's and adjusted eccentric bolt on clutch so I'm eliminating clutch as problem.