I own a 2003 757. Just recently it's been blowing the main fuse after it gets up to operating temp, usually about 20-30 minutes. After that it blows it within a few minutes or seconds. I've gone throught the wiring harness as best I could and found no exposed wire. On a different note (This has been for about 1 year). The safety inter-connect has somehow gone haywire and will only allow movement of the machine with the PTO engaged. I appreciate any assistance with either of these!