[Diesel Krazy]

I am having some issues getting my deck setup properly. I have done some looking and haven't found a 60" Haban exactly like mine to compare setups. My deck seems to be seriously abused for having less than 700 hours on it. I am having a problem with loose belts and lifting the deck. I do know I am missing the bracket at the rear that helps keep the deck running straight but I don't really think that's my problem. I am in need of that rear bracket if anyone has one they would sell. I did just notice that the rear mounting has lots of play where the long shaft goes to hold the rear of the deck. There are 3 holes in the mount on the deck and I am not exactly sure witch one I should be using. Here are some pics to show what I have. It will be easier than trying to explain it. I am looking for some advice to help me get this thing working correctly. Thank You in advance.