LML Forum:
    I'm getting ready to undercoat my wings and thought it might be a
good idea to check for potential fuel leaks before painting.  Those of
you who have gone through the drill how did you do it and what did you
use for fuel?  I'm not so interested in how to plug leaks as I am in
finding them.  I've done the balloon test and maintained pressure well
for 24 hours.  I'm reluctant to just fill up with fuel only to find I
have a leak and have to deal with surface contamination in the
fiberglass.  Using water could be a potential approach assuming I can
dry things out later on.  Any and all suggestions will be greatly
appreciated.

Regards, Pete Field