I bought a Van's gascolator and am using a an 816 nipple to penetrate the firewall. The threads on the nipple only screw into the gascolator about three turns and thusly leave a gap of about 3/8 of an inch between the gascolator and the nut on the nipple. This can't be right as it seems this gap would be prone to vibration and eventually loosen or break. If I shim or space the gap it would still only provide for a 3 or 4 thread penetration into the gascolator. I had the same problem with the brake cylinders and the an fittings but in that case I just tightened the daylights out of them as there was not a nut on the fitting, but with this fuel line I'm not willing to do that. Has anyone else had this problem and what do you reccommend? I am open to scrapping the gascolator idea completely but am unaware of any firewall side alternatives.Thanks. Jim.
