129 Cub Cadet Mower mule belt adjustment may have part or bolt missing in belt adjustment or tensioning area. Left side pulley trying to cut grooves into the cast axle, I just purchased and do not know what it should look like. Mower was separate from tractor and I had to buy a new belt, Is there a steady for the left-side pulley? Adjustment is unclear. Please E-mail to jlangfarm4@yahoo.com Thanks.