Glow engines must use their mixture for ignition timing. They need fat running for that reason. Gasoline on ignition of course is a different matter.
Now, run glow fuel in a GLOW Carbed engine set-up with CDI and you will find out quickly how much glow fuel you have been wasting.

Anyway, to the original poster and to anyone else wanting gas fuel lines that simply work, use ester based polyurethane tubing. McMaster Carr carries ester PolyU (Tygothane) for 30 cents a foot. It is designed for organic solvent materials like diesel or gasoline. Stays flexible and strong inside the tank or out and doesn't swell. I've been using it with both pump gas and Avgas 100LL. BTW- there is ether based PolyU also which is no good for gasoline....don't get that