After reading through some past posts I'm wondering if the tilt cylinder needs to be rebuilt. I would love your thoughts on this... I was pulling out some brush with the grapple when I heard a clunk and the grapple tilted down. It won't tilt now with the exception of maybe a half an inch either way. The bucket has slowly tilted down after a time for quite a few years and I noticed that it was dropping more quickly lately. When I operate the tilt pedal I hear the pump respond and everything looks normal under the cab. Does anyone have an opinion about how to diagnose this?