I recently purchased what I think from serial# is a 1973 model C with the 8 speed swiftmatic, 2 gear selectors and forward/reverse selector. (This is my 2nd gravely purchase) It sat for several years outside and didn't run. Got it running but I need to pull the carb and clean it as the air/fuel has no adjustment. Anyway, I couldn't get it to move so I sprayed WD40 on the hi/low gear and axle selectors on the lower cases many times over several days which helped. I was able to get it to work and after running it around the yard several times it is freeing up to the point where I can move it a little then it will go into gear from neutral. I've worked on various equipment over the years but never a gravely, I read a lot on the forums to learn. It appears the previous owner had the forward/reverse adjusted wrong as the springs were adjusted tight on the arm going into transmission. If what I've read is correct, after adjustments are made and are correct, reverse should not lock in place, you have to pull and hold the handle in reverse for safety purposes. Forward should be controlled by pushing it forward locking it over center. The springs appear to be mashed as there is no clearance between them. When I push the forward lever to make it move forward the rod from the shifter control to the transmission bows out. Again, if I'm going in the right direction I think I need new springs as there is no tension from the spring to hold it to move forward. Is there anywhere I can purchase new springs or does my lack of knowledge have me heading down the wrong road? I work a lot and don't have much time to play around with it but I will post pics at some point as it appears to be in really good condition.