i got back in town last night and this morning i set up the right tank to leak test it. first i leak tested the left cell, no leaks at all. yeah. i switched the leak test stuff over to the right tank and pumped it up. i sprayed the soapy water all over and i had one small leak on the access panel at one of the screws, which i havent sealed at all yet (on either tank). i just put the cork gasket on and put the screws in without any sealent. so only one small leak on one screw, great. i'm officially declaring the fuel tanks done.