I have a 64 Val vert I am trying to get on the road before the snow flies. (Now i gotta make sure the heater works. It's always something)
Anyway my tank had pinholes under the strap. Although the inside looked almost perfect through my boroscope. I just bought a new tank from Vans. $108 and DONE!! For that price it's not worth messing with it.
I would suggest you drop the tank and check out the sending unit, filter, float, etc. before ordering. My sending unit was good but the sock and float were not.
