If it's any concilation mine started dipping to 0% earlier than previously, after as little as 95 miles in one extreme case, but bounced back up over the next 100 miles.

Have also found a rest can have gauge reading higher. e.g. near 0% when switching off, then 31% the next day after 150 miles from full tank.

Cannot believe it's the sender resistance causing these great variations, so we are down to the bizarre display software algorithms. Will check/remake resistor connection though with proper soldered joint.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone