Thanks everyone for your replies.
I did run the volt meter test and did not receive any readings. The door did calm down a few days after the buffing process. Its no more collecting fine dust.
I am going to replace the batteries this week, and have decided to just go with Interstate GC2 6v. We are currently destination campers for 10 to 14 days at a time. Once we are both retired then we will look at adding a new fridge, and upgrading the supply then, but that is probably another 5 to 6 years. Our current Dometic 1272 is performing great.
The old 6v costco batteries are 6 1/2 years old, and were doing good until a month ago when they started gasing off. They have been staying fairly dry on top. Last winter the storage facility i was in did not have power so i just removed the negative cable on the house batteries and everything went well. Now that I am in my shop Ive kept her plugged into 110 with the main switches turned off.
Wondering now if i should go back to just removing the negative.
Owners of a 2018 Lance 1995
Former 02 Intrigue by Country Coach