Jesse at bigs told me to set up my/his 950 1 1/2 turns out on the primary and 1 out on the secondary. I always thought they should be the same. I just tried without question and I must say this thing idles fantastic for a 470 w a 265@50 cam. dont know if that helps but what I am trying to say is that try it where it runs the best even though it may not follow the conventional path.