I needed something to do that did not involve the canopy, so I dug out the NACA vent for the rear seat that in bonded to the interior bottom wing skin. I cleaned up the surface of the bottom skin, which had already been scuffed for adhesion and then went to the refrigerator to retrieve the tank sealant (adhesive). I have to tell you that as soon as I opened up the can, that distinct smell took me right back to the fuel tank sealing days. Fun! I mixed 30:3 and had a good amount left over - it doesn't take much and I could have gotten by on less...