I just acquired a super imp, it's pretty rough. I lined the fuel tank, new fuel lines, pump, carb kit, and battery. She is up and running. The tires are foam filled, but in terrible shape. I had her on the snow today, and think the tracks may be a little loose. They didn't slip, but have a lot of deflection. How tight should these be ran, and how do I adjust them. I see some have a grease cylinder, some have a threaded rod. But this has neither (that I can find). The front idler is on a sliding square shaft (inner), with a large bolt through the outer shaft. Any help would be greatly appreciated. Thanks...