I had this happen to me and it was a real disaster, fuel leaking all
into the bilge, alarm going off, the works. I tried three different
marinas, one guy went after it three times to no avail.

I finally covered the whole damn thing with grey MarineTex, which looks
like hell and I will never be able to replace the sender without major
surgery, but it doesn't leak.

What a ****ty way to fix something like this, though.

Capt. Jeff