Had extra air pressure in the tank. Used it to permanently attach the NACA vents. Used E6000 adhesive (permanent strong stuff) to coat the attach surfaces. Riveted the NACA vents in place with aluminum backing strips to spread the clamping force and keep the vent from cracking from rivet pressure. The adhesive is very strong and I cannot budge the big end where you attach the scat tubing. Hope I don't have to replace them. That would be another nasty job getting off.
