SB RPM air-gap/cross winds

Has anyone heard this or experienced this.

I called a company to recurve the MP dist for my stroker, and after I gave him the specs they asked " how does it idle" I said kinda rough, I think its in the carb or dist, why do you ask? He said cuz the RPM airgap and the crosswinds port runners are to large and the engine will idle rough. He went on to say he has seen it many times in chevys and mopars, he also said i should use the RPM performer.

I have never heard this before abouth either of the 2 intakes.
Anyone else ?
Author: admin