A few things to remember :
Always use a gas compatible tank stopper such as the Dubro brown gas stopper and similar fuel tubing like Tygon or Hayes black seamless neoprene tubing.

Always loop the vent line around the back of the tank and then down and out the fuse bottom.

Use a felt filtered clunk on the tank's feed line, keeps the fuel to the carb dirt and bubble free.

Always uses some type of barb arrangement to keep the gas tubing on the tank's brass tubing as the vibrations of a gasser can make them slip off and secure all the connections with small electrical nylon ties. It's best to use a tie before and after the barb.

Karol