Several members have experienced problems with sticking water gauge sensors in all ages of boat. The problem is normally cured by removing the sensor and carefully removing all traces of scum on the tube around which the float slides. The design is very sensitive to scum build up.

The secretary would be interested to hear from anyone who has experience of stripping down their Exalto thrust bearing and stern tube.

Jeff Payne, cruising the Med in Constantia had an expensive
experience when the high temperatures and high salinity combined to build up salt deposits blocking his exhaust siphon-break (the inverted U) and allow sea-water to be sucked back into his engine. He recommends very regular cleaning and checking. (I immediately checked mine and also found it blocked). If water is not continuously running out into your cockpit drain, then yours too is likely to be blocked and putting your engine at risk.