OK, so the level sensors in my fresh water tank and the black tank are not working. They just read "empty" all the time. Now I can't say that I blame the black tank sensor for going out on strike, given certain working conditions, but the fresh water sensor doesn't have a care in the world.
The gray tank sensor is a real trooper, having carried on for lo these many years.
Question: Can these be reasonably (in terms of time, money, and general black tank unpleasantness) repaired? Or should I go with my replacement sensor setup
that just sticks to the outside of the tanks?