I’m seriously contemplating replacing the fuel tank sender with a quick release cover plate and will simply check the fuel level with a dipstick clipped to the ash frame.
A bit of a faff taking out the plastic boot tray, but for me that’s no hassle. I only ever secure it with three knurled bolts these days
I have the longer sender unit, but it still shows 0% most of the time, which is absolutely no help if you forget to reset the trip mileage when you brim the tanks.