Worked at hangar today. Torqued vent line fitting to 58 inch pounds. Mixed up proseal using my new triple beam balance to get the right ratio. Cleaned up sealing surfaces, applied a thin layer of proseal to the outside surface of the tank and the inside of the cover. I did not use the optional cork gasket. The difficult part was inserting the fuel pickup and level sensor into the tank and getting the first two screws in the holes to ensure the cover is properly positioned without smearing proseal around on everything. Then I added a small dab of proseal around each hole and at the bottom of the head of each screw and started all the screws. Then tightened all the screws a little at a time until proseal started squeezing out slightly around the cover.
I started out with two gloves and had to remove them eventually because I got proseal all over them and had trouble holding the small screws. The next tank cover should be easier.