Have you ever taken a pic with your phone looking down the belt to see where the belt rides on the primary could be an alignment issue between the primary and secondary
if you are looking at a fs30 you will have to back it in with skinny tires, even if you could pull it in it won’t pull right because of the weight needs to be up front
Cut the wires going thru the axles and redo them outside the axles. Like said the wire inside the axle bounces and ends up shorting out. It’s happened to both warriors I’ve had and all my friends toy haulers. It can cause a fault and you won’t have brakes when you need them.