My 861 is leaking oil through the lower seal into the gear box and out the valve. Ive replaced the lower seal spring side up and still leaked! Ultra dog has a detailed write up about replacing these seals and I was wonder about the Section that has to do with center spool how to remove this from the hydraulic block and if this could be the problem with the leak? I wasnt able to remove the center spool and found that one of the springs completely fell apart. Could a piece of the spring be stuck in the hydraulic block causing excessive pressure creating the leak through the lower seal? I know the seal is installed correct and the shaft is in good condition why is it still leaking pleaseee help!!!!!!! Could a piece be stuck in a hydraulic line causing excessive pressure? The center spool moves up and down slightly, should it come out easily and is there a trick to remove it?