THANKS PAUL. LET ME GIVE A LITTLE MORE INFO THAT MIGHT HELP. IF YOUNOTICE WHERE THE ON/OFF SWITCH IS, JUST ABOVE THAT SWITCH AND INSIDE (FUSE), THERE ARE TWO ALUM TUBES, EPOXYED TOGETHER THATSTARTS ABOUT AN INCH FROM THE SECOND BULKHEAD AND GOES STRAIGHT TO THE FIREWALL (6" LONG). THIS HAS GOT TO BE FOR THE FUEL LINES BECAUSE IT ROUTS THEM PERFECTLY. THE QUESTION BECOMES, IF THESE ARE INTENDED TO BE FOR FUEL LINES, WHY SO FAR BACK. I HAVE SOME FUEL DOTS THAT I GOT FROM CENTRALHOBBIES SOMETIME AGO AND THE OD IS TOO LARGE. I'VE BUILT SEVERAL AURORAS IN THE PAST AND THE PLANE IS NOT DESIGN TO HAVE THE TANK MOUNTED ON THE CG. IF YOU DID THAT, YOU WOULDN'T HAVE ROOM FOR YOUR RADIO GEAR.WHAT I WILL DO IS GO HOME AND TAKE A FEW MORE PICTURES SO YOU CAN HAVE A BETTER PICTURE OF MY DESCRIPTION. - STEVEN