Hi Roger ,just recieved the new MAR unit today ,was excited,installed the unit,everything looked good.,came down a couple of hours later to check and the unit was sitting in a small pool of water,not good for my stand.on closer inspection I saw that the top seal is leaking,I unplugged and made sure the o ring was in place and tightened the screws as much as I could to no avail,continues to leak in one spot,very disappointed,shouldn't happen,please advise.