Holley/Demon Carb stumble

I found a sight that shows the heat ranges and YR is right it show a number 7 is normal and 9 is cold/High performance.........mine is a 6:wtf::BangHead:
Thanks for the link.
I haven't use cham for a long time and really liked the NGK's
I just order 10 new plugs......hope i can cancel that order tomorrow