Leak tested both pressurized tanks with soap water. NO LEAKS!!! Next... test fitting the Right Tank onto the Right Wing Spar. The fit is nearly perfect and all the Attach Angles lined up. The plans call for installing about half of the screws and bolts. I did strip one of the Phillips head screws and it would not come out. Looks like a trip to the hardware store to pick up a set of EZ-Outs.