What to look for when buying a new to me transmission? What fits a 1974 R90/6? I'm aware that the 74 is a bad year, but is there anything to "fix" the problem should I open things up and fix it myself? I've never opened a transmission, so I'll be in unknown territory. I was ridding home last night (1974 R90/6) and broke down around 10:00 p.m. I was clearly ready for the trip with nothing more than the clothe on my back -a polo and shorts-, my wallet, and a cellphone running out of charge. I was on I-75 when, cruising along when I lost propulsion. RPM didn't change but I was clearly losing speed and more throttle didn't change anything. Shifting down didn't help but I could see that I putting some power to the ground; sadly that was short lived. Being the only tool in sight, I spent the night on top of the bike, and waited for U-Haul to open up and finished the "ride" home this morning. I have yet to open things up to diagnose the problem, but my belief is that it's a single failure point at the transmission or beyond (driveshaft). I heard no noise or rattling, so I don't have much to go on but I believe I'm going to be in for a new transmission. Thanks for the help.