I have a 65 chevy elcamino, it has a 283 chevy v8 motor, it also has a muncie 4 speed transmision, my problem is it keep eating up plastic speedometer gears, They are plastic and it grinds the teeth down just enough to make my speedometer quit working, any one got any ideas why and what I can do to fix this problem, been told it could be a alignment with the speedometer gear or the metal gear on the shaft, any information would be really appreciated, I am not a transmission man, thanks, you can also e-mail me at ltremayne45@gmail.com, A new member, Lloyd