oh well.. as I said I have four of them on my three planes and haven't had any trouble so far, but I'll keep an eye on them. If/when they fail I'll think about replacing them with fuel dots. It's going to be a pain on the skybolt as I can't get to the tank to add the third line - it's the GP kit version and you end up building the tank into the plane. I might just had to stick with the current system on that one.

Pity they're unreliable, they're such a convenient system.