I have a 1450 and I am having trouble with the deck drive belt. It keeps flipping over upside down for some reason. I bought it from a guy who really didn't believe in maintenance of any kind so the adjustment in the front was missing and was held tight with a piece of wire. The deck was beat and so after rebuilding the deck and making a new adjustment gizmo I am having trouble with the belt. It seems the mule drive is not quite right. I assume the idlers are supposed to be bent sideways but how much? I think they have been tampered with. Everything moves free and it looks to be running strait with the deck pulley but something is wrong. It will flip the belt completely upside down in a split second. Is there any way to check the mule drive idlers to set them at the proper angle? It is a 44" deck.