back working on the 780 a lil,, the backhoe is dead unless you pick up on the loader bucket, then simultaneously the backhoe will move, but doesn't have much power. so,,, I have replaced the power beyond o ring in the loader valve body, didn't help. now am looking at the loader valve spool, haven't had it quite all the way out as it won't clear the controls, it has a threaded bushing at the top, then another bushing that I believe is D shaped, about an inch and a quarter long, position doesn't seem to matter, just acts as a bushing so it seems. also on the bottom of the spool there's a bushing, that one will barely clear the ? nueraled part of the spool, inotherwords, it could be positioned higher on the spool, idk, maybe its in the wrong place... ? more later, thanx Steve