Jim, you've convinced me to take another look at those hoses, not that there's much that's visible, hence my earlier request for plans, in the interest of minimising holes that may be necessary for a thorough inspection.
Certainly I'll concentrate on that before a more destructive examination of the fuel tank.
In addition to the proper variation of the 'ole "roll 'em in flour.. routine,"' is there anything I can put into the tank & lines to make a leak more obvious? In the way adding anti-freeze to the water in a car radiator makes the coolant more penetrative & quickly reveals leaks?
Come to think of it, here's another dumb question: just how do I test for leaks - the fuel tank & lines are empty?
AL