I am thinking about taking an inch off the fuel filler neck for my 1974 GTV's fuel tank as mentioned in several forum posts. The California gas pump nozzles create problems. For those who have done this, how did you cut out the pipe -- hack saw, plumbers tubing cutter? Then what did you use as a sleeve to connect the end of the filler neck back to the tank? Does the sleeve (if rubber) have to be a gasoline-compatible material? Where did you source the sleeve from?