I just picked up a 1997 ZR 440 today and lucky the sled is beautiful! Everything on it looks brand new and it runs good! But it has over 5000 miles on it but yet it still has over 125 compression. But the brake has a issue i think, the Guy said he put on a new break pads but the pads seem a little to tight on the roter. And the clutch what rpm should it be engaging at?