Hey JB, I assembled the nozzels on to the 2 hole support separate to make sure that they where glued the right way. Then I painted the inside of the flamethrower in aluminum and after it was dryed just attached the entire (painted and weathered) nozzel setup to the flamethrower housing. After that I just glued the bottom part of the flamethrower.
I then painted the flamethrower covering the nozzels so that they would not get painted.
I found it easyer to assemble the nozzel setup first.