I put sealer on both sides of the gasket. I then stick the gasket to the pump. Then put one bolt all the way through the pump and gasket. Then put the pump up to the mounting position and start the first bolt, whichever one is easier to get fingers on. Your cam is in position where it will go right in with no worries about arm position.
Get that first bolt finger tight, then, making sure the gasket is still in place, put in the other bolt finger tight. After all is finger tight, get out your sockets and tighten it down. Permatex sealer will squeeze out. That is good. Now, hook up your fuel lines and see how you did!