I had a complete 472 Hemi built and dyno tunned by an engine builder. Starting to put the final pieces on it and notice that the have the progressive linkage set up in a 1:1 configuration. I am wondering pros and cons of both ways and if I should worry about it. I can see where 1:1 might be more dificult to tune, but it was dyno tunned already. But progressive seems like it would run the front cylenders lean at an idle?