FYI, I am learning more each day. The side slide was having difficulty by not engaging every so often. Had to manually pull ( winch) the slide back in last trip. I found the slide key switch was turning without the key and not engaging. A little electrical tape to secure the tumbler fixed the problem or so I thought. I also found that by pulling in the slide manually, even though I opened the pressure bleeder screws has pulled some air into the lines. I cycled the pistons twice with the valves open and it purged the air fron the system and once again works perfect.
AND three inches of electrical tape is a pretty cheep fix.