Just recently picked up a c-120 8speed from a man who had it parked in a barn for 13 years. It turned over, good compression, had spark etc, but I haven't had it running for more than a few squirts of carb cleaner. I don't want to run the engine until I've had chance to replace fuel lines and change the oil. My real question is; what should I look/feel for to know if the transmission is in good shape while it's not running?? I've noticed that it's hard to shift between gears (clutch depressed, engine off) New to wheelhorse but I couldn't pass on what I thought was a great looking 150$ garden tractor thanks &merry Christmas!