I personally don't use gas primer, but on the 514 Ford he has one with a 1 gas tank and uses it to warm the car up on gas which heats the engine up quicker than alcohol. I just spin the engine over a few times to get the oil pressure up and then give it a shot of gas to fire it up from a squirt can. After it's been warmed up which i do with the fuel 1/2 shut off (this helps stop oil milking) and let it idle to about 180 degrees. The big trick with Rons stuff is to shut the engine off and close the fuel shutoff at the same time, that way the fuel doen't leak back down, it then starts like a carberator after it's warmed up. I also go the the burn out box with the fuel shutoff at 1/2 open to keep the temperature up and then open the fuel all the way up. If you follow this procedure you will be amazed how well they work. Tuning a toilet bowl is easier that tripping over a log once you understand them, same with stacks injection or a hat injection.
JMO
Zip.