Need help! My new 1972 IH 210 swather just broke the main drive belt which runs the pitman and all the platform. Has anyone ever changed this belt? It is about 6 feet long, and the problem is, I cant get it off (or a new one on) since the belt encircles the main frame. It looks like the whole platform needs to be removed to allow the belt to slip back onto the two pulleys. Any suggestions? ken