I have an MTD Pro snow blower that is a real pain in my a??. I have tried numerous times to adjust the gearing on this. R2 is like R1, 1st is R1, 2nd is like 4th. What I am asking is how in the heck do I get everything adjusted so when I set the right gear that is what it is going to be. I have taken the drive train apart and greased the hexagon shaft, cleaned the friction plate. The serial number for my snow blower is 31AH65FH795. If anyone has worked on this type of machine please help. Thank you.