Anyone have a source for locking gas caps?

[WERA]

As the title sez I need a locking gas cap. Standard FL112 60gallon tanks, some slight issues with the disappearance of at least half a fuel load a few weeks back when prices were way high in GA.

[RICHARD PHELPS]

I may be able to dig up one, I will let you know, do want a new one or is used OK?
Richard

[WERA]

Either one is fine by me but I do need two - thanks for looking!