Only on our third RV but none of the tank sensors have ever worked right for long. To us it is no big deal and we really never even look at them. We dump black tank every 5 or 6 days and the gray stays open until the day before we are going to dump the black. If you stress over these sensors not working correctly and keep trying to have them repaired then you will never be "a happy camper".
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Full Time in 2017 Newmar Ventana 4369
pulling a 24' enclosed (Mini Cooper/Harley/Kayak)
(traded 2014 Thor Challenger)
US Army 70-73 Retired LEO
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