Started pressure test with Lucio's support. Prepared the tanks using the fittings provided in the VANS Fuel Tank testing kit. Adjusted the right tank fuel sender floater to avoid interference with vent line. Additional bending of the vent line was required Added the "safety balloon". Inflated carefully both thanks. Used soap water to detect leaks. No evidence of leaks in the rivets. Smaller leaks on the balloon and on some blue fittings that have not been finally installed (no permeated nor final torque). Fixed the leaks to the minimum. All the pictures taken 4 hours after pressure test's start After 18 hours no visible reduction on the balloons.