OK so this little b8200 I bought has been great I love it. But, and there always seems to be a (but). With the loader up and the 3ph up if you power the loader down the 3ph goes down as well. Release the loader control and the hitch comes back up. It was down on fluid, I topped it up and no difference.? priority valve ? air lock? Dumb Owner?? Any help would be appreciated. Thanks.