please i need help ?

The original thread is do I have too carb?

The other day plugs were so bad car would not even fire got out only three of the header tubes were hot which happened to be all on the drivers side where i had changed the gap from .022 to .040.

So I changed out plugs from an ngk fr7 to fr5s and gapped them for .045 car started but still carb backfires etc... I powerbroke the car to put it under a load and try to clean out the cylinders it seemed to help. Did I do the right thing? the other thing is I am trying to get an email as far as the stats of the carb and stuff that the guy worked on but all i know now is he said it has a 6.5 powervalve and jets and etc... i dont know he said he had it written down somewhere.

If someone has an intake or carb for trade I am interested this race demon i think is just too much carb with the weiand team g intake on the car as well.