Any ideas, I've just had a long range tank welded, seam had cracked, it's the oversize lambretta shape. Anyway put in, not used for a year or so, and petrol keeps p1551ing out of the top of the tap. It seems like the nut holding the tap on is loose, I have tried 2 & different taps so guess it must be the thread on the tank itself. Anyway to sort this? I've tried PTF tape, plumbers stuff, with no joy don't think it likes petrol, is there an equivilent for this type of thing or any other ideas?
Cheers