We started out looking at the auxiliary hydraulics then went on looking at every valve in the block the more we looked the worst it got. Didn’t really do any thing but the last time we put things together everything worked, great. Started out the shop but when we sped the engine up went back to misbehaving again slow it down and it worked. Went back to looking at the auxiliary hydraulic again so put a hose in the auxiliary outlet and back in and everything worked fine. Took the front valve stem out and I could blow air through it, took it apart and cleaned it did not help so new valve it is. The auxiliary was leaking a small amount of oil by with no wear to go and was locking everything up. Spent 4 days working on it. Was about ready to park it in the Willy weeds and forget about it. 

 https://talk.newagtalk.com/forums/thread-view.asp?tid=983900&posts=3&start=1