hey guys I got a 7500 year 02 I bought it with 110 hrs and it is now almost 200. The thing is when i am in high gear wide open some times I hear a wyning noise from i think the rear end . if you come to a stop and then start agian its not there untill you go a little ways . it also happens when the tractor is hot or has ran a while . any thoughts. also i got a steal on a 5 ft tiller king cutter is it to big for my tractor. and if it is to you think if i take a row of tines off that it would hurt the tiller . I ran a 4ft just fine last year .