Got a 147 here. I want to replace the belt runs from the clutch pulley, around the mule pulleys to the mower cause it keeps throwing the belt off the pulley on the mule. The mower deck is a 482 U 1113. The belt that's on it now is a 4L780 which I know is not the correct belt, but the length seems about right, maybe a little long, based on the adjusting bolt position. I think the correct belt is a 3/8" X 80"PN/ IH-490489-R2. My concern is that belt is longer than the belt I have now and narrower so it will sit deeper in the pulleys. Seems like I'm going to run out of adjustment before I get it tensioned. There is another belt 3/8" X 79" SL PN/ IH-117465-C1 that is not listed for a 48" deck but seems like it might be a better fit but even that might be too long. Any thoughts before I order one of these belts? Thanks in advance. You guys always have the answers!