Can-Car 20 winch

I have a Tree Farmer C-5 with a Can-Car 20 winch, and the cable pulls out so hard that I have to hook it to a tree and pull away to get the cable off, and then when I have a hitch on it, the cable wants to pull out when I am skidding. I know there are bands in there, has anyone ever replaced them is it a big job, what kind of money am I looking at spending.
Thanks Guys,
Ned

Can-Car 20 winch