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Message: <blockquote data-quote="Moonshadows" data-source="post: 114670" data-attributes="member: 19262"><p>I have an s770 with about 2200 hours in it, still a nice tight machine! I think it was used for a while with a shredder head. I meant ion that because it might be related to my problem. I posted a while ago because my grapple bucket would not hold in the open position (it would slowly close, it still does this but it used to maintain a tight grip on the load now it's loosing its pressure (slowly opening) It seems the pressure is bleeding off, if it where a valve seat issue it would have positive pressure Is there a pressure bypass in the system? My guess is there is and that bypass is not seating (or maybe wornout from the extended use of the shredder) and allowing to pressure to slowly bypass. I used my backhoe attachment on a small job the other day and although everything works I don't think I'm getting 100% power (seat of the pants measurement compared to my old machine) Any suggestions or thoughts are appreciated —— thanks scott</p></blockquote><p></p>