1997 bobcat skidloader lift spool leaking , my guest ion is,can you remove lift spool and reseal without removing the hydraulic control valve body. It looks like a tight spot to install the seal in the bore. The service man only shows procedure with HCV on the bench. I can get to the retaining screws,but not sure I could install bore seal if it takes much pressure to drive in,not much room to use seal driver. Thanks