rgchak - Yes good suggestions but after 3 trips (and my losing my cool with the dealer) I would have to think they did all that? who knows
I just now went in and studied the toilet. We have a full size toilet, and the ring of water outlet holes around the top inside of the bowl is ever so slightly "weeping" little occasional drips of water down into the bowl. You see a bit of water well up in the hole, then ebb back, then put a drip down.
My wife likes it cool at night, so I usually kick the heater on in the morning. That could explain the temperature relationship to the issue.
2016 Jayco 27RLS
2015 Ram 2500 Big Horn Cummins Diesel 4x4
19xx Beautiful Wife
2 x Golden Retrievers