[TR] TR2/3 gas cap & filler assembly

[Angelo Graham]

Hello List:
Guess I wasn't paying close attention when removing the gas tank & 
filler combination and now trying to re-install. Can anyone review the 
order of the pieces? Does the hex nut/spigot combo go below the rear 
deck into the rubber sleeve and the cap screw on from above the deck? 
Forms a sort of a sandwich - the hex nut & spigot below the deck and the 
cap & small chrome washer above the deck? Do I have this right. A really 
tight fit. Any tips on making the re-install easier?
Thanks for any help with this. Feel really dumb...
Angelo Graham