Perhaps another option is to make some alloy tanks, then the problem
disappears. The difference in weight would be negligible, and bonding would
far more effective. The other option is a bag liner, but I'm not sure that
it would work.
I am using West system (which is specified for the VariViggen by Burt),
for the fairing and repair work on the TriQ. It has been very successful so
far, but I will try a sample with Mogas and see if it is affected.