If you look the little flimsy metal bracket on the Fore hat is identical to the metal plate on the back of the Fuel level sender. You remove the sensor off the thin metal bracket it mounts to, then clip the sensor onto the Fore bracket, at least that's how I did this weekend and all is well.
Agreed with above statement. Also check the yellow wire connection that goes to fuel level sending unit. Mine was only holding by a little bit. So I re soldered it.
EDIT:
In this picture I have the sending unit on backwards!!! It needs to be flipped 180 degrees!
I figured that was how it was supposed to mount. How did you guys get the level sender off the stock bracket without breaking it lol? I bought a new sender from lethal and ended up cracking the circuit board from trying to pry it off the stock plate.