Somebody else was looking for the cranks 2-3 years ago on this board but I dont remember if he gave up or found them. You can call KandM in case they have any. 800-992-1702 My son decided it was time to get a combine with a feed reverser so we bought an R60, 6 years ago. That was a good move. But if I ever go back to an l_M series, I will do something to make cylinder adjusting easier if I have to make cranks myself. Dont overlook the chain tightener. Having to readjust it every time you move the cylinder is more than a real pain. Tom