I'm new to this forum, having just discovered it today. I own a Max II, most likely a 2002 or 2003. A loud sharp sporadic clunk on the left side was the first sign something was wrong. I used it sparingly after it developed this problem. Now that ice-fishing season is here, I started using it regularly. Now the clunk is still there, but I've also noticed that when I lock up the right track to turn, the left track does not have the power to push me around. This is especially bad in any kind of snow, but it barely makes the turn on an icy parking lot. I simply cannot drive it like this and I really need it to get to my ice fishing spots while the fishing is good and the ice great. I called the manufacturer and in the limited time the mechanic had to talk, he suggested the chain most likely needed to be tightened. He explained how and then I found a video on this site that shows it plain and clear. The mechanic also said it could be a couple of other problems, that I really didn't understand when he explained them to me. I also noticed that the machine pulls hard to the left and I constantly have to counter-steer to the right to keep going in the direction I intend to go. Anyone have some input on this? Thank you.