I just finished a build, 70cc alukit on a stripped down 94 targa, and put a little less than half a gallon in the tank and took off on the first run.
I should have tightened the petcock first. Two blocks away it popped halfway off and DUMPED gas all over my engine head, delicious two-stroke fumes filled my nostrils but I had panic in my eyes.
kakakakKLINK! I could feel that poor little piston slam to a stop inside the cylinder. I pulled over swearing like a motherfucker and dumping gas everywhere.
That was pretty shitty. at least the little kids next door got to watch me have a meltdown. probably learned a few new words too.