[njsteve]

I remember back in the 70's they used to have this national level contest for automotive technicians that involved them having to diagnose and fix a non running car in the fastest time. They used to rig the cars with devices like this piece. I remember once they used black painted cardboard and substituted it for the carb base plate gaskets. When you looked down the throat of the carb it was dark so you didnt think anything of it, but the car still would not run. The first team to discover the problem won the contest.