the rubber plug has 4 holes on one side only so u can decide how many you need in your case sounds like u only need 2 of the holes use 2 opposite from each other, 1 for fuel the other for exhaust pressure. There should be a screw and a little round plastic peace with 4 holes in it, the plastic washer go on on the inside of the tank rubber plug and the screw screws in from the front you put it all together in the tank then do up the screw and it makes a seal in the tank and on the aluminum pipes, The long peace of aluminum is for the exhaust pressure your need to bend it so when it's through a hole in the rubber its at the top of that tank as per the pic in the link. One of the shorter ones is for the fuel out to the motor want to push that through the rubber plug so there's even pipe on both sides then u want a peace of fuel tubing and the chunk, put the chunk in one end of the tube then u want to cut the tube to length so when it's in the tank pushed onto the aluminum pipe it swings in the tank just short of the tank u want it to move freely check the pick in the link, this is used so when you fly upside down or wherever there is still fuel getting to the motor . Hope this helps, if your still not sure check out you tube there's some videos on there
http://www.google.com.au/imgres?hl=en&c ... =149&ty=82