Hey Jerry, About your Leveling jack issue. Can you tell me if you were able to raise the problem jack(s) manually or was it just slow/stuck? My issue is that they all go down and up fine but one jack. the drivers rear, goes down but not up and it takes a large amount of force to bring back into he cylinder. Which is me with an 8 foot 2x4. So not sure it could be a valve and not twisted seals or something worse.
Thanks
John