I just got my first Case tractor and I’m thrilled! As expected I am learning how to use it and I am finding a few challenges. Specifically, the blower seems to be eating belts. I replaced the belt that came on the blower because it was frayed and jumped off twice in the first 10 minutes. The picture is from a new 81x1/2 belt that was only used for about 20 minutes. I am told that original was 80.5 and it appears that tension bar is a little misaligned. What belt is recommended?