Did the 50 hour service to my TC25D. In the process I forgot to fill one of the hydraulic filters with fluid before placing it back on the tractor. Now when I lift the 3pt hitch with bush hog attached, it takes a half hr for it to work its way back down (lever in full down position). I have tried bleeding by loosening the filter which is now full but that didn't work. Any ideas on solving this problem?