hello everyone, I have a super a that has a bad gear in the left hand final drive. it is the large gear at the bottom of the outer part of the axle. is this gear still available form IH or does anyone have one they would be willing to sell? also any idea as to why all forward gears work but reverse grinds? i have had the cover off and cant see any obvious problems. when i put the tractor in reverse by hand with the cover off i can turn the belt pulley and make the tractor move however with the engine running it just grinds in reverse. thanks for your help I can be reached at [email protected]