Metering Plates, six pack

CRUZE 418 said

Was looking at my options, met a drag racer from Minnesota at a mopar drag race this past weekend. Someone named Brad VanLant did his carbs. on his race car. He has used pro max and metering plates. Is currently using metering plates. Can not reach VanLant, supposed to have previously been with Holley.
Long story, bought car last year and had Phil Fish go through my carbs, big mistake.
Anyway, he took the pro max plates out and put the Holley metering plates back in.
I am trying to get a stagger for jetting on my new 418 engine. Right now, thinking that I will put the pro max's back in. It just seems like it could be a shorter road if I had a ballpark starting point. Trying to follow the article " how to tune a six pack ".
Thank you!

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The Promax plates are not properly engineered if you look at your carburetor there is a big void right behind the plate the small sheet metal plate that comes with the original equipment metering plates is designed to seal the plate to the thin sheet metal plates so the carburetors do not take on unmetered bypassing the jet all together. These sheet metal plates are not used on the Promax set up.
Study this for yourself and you will see that the gasket goes over the void on the carburetor and the plate goes on top of that so there's nothing keeping fuel I'm going around the Jet and behind the plate. Recently A friend of mine went to West Tech have his engine dynoed and it had these plates on it and they simply would not respond to jetting the discovery was made after the dyno session that these plates do not seal, I've talked to the guy at Promax to give him the heads up, and he said some people fill the void with epoxy which since then we have tried and it now responds to getting change