The centrifical clutch cover on my 1996 xplorer 400 4x4 has been vibrating alot lately an now the clutch housing inside has been rubbing the cover while idling. I took the cover off an its not cracked an the belt will need to be replaced soon but still very useable. If i manually pull the housing out away from the engine while it runs it doesnt rub but if i let it go on its own it rubs. Is there a bracket behind the whole case on the motor that maybe wore or the rubber gasket inside the housing spueezed too much over time that the cover is now too close?