Problem with Holley 4 bbl

I'm going to pull the carb again and go through it, each passage, etc. to make sure everything is as it should be. I have 15* initial advance (not a stock cam) and it seems to like that. I've been adjusting the idle speed via the secondary set screw instead of the primary as I've read on this forum. I did make a change to open them up a bit and I wonder if I went too far. It currently idles at 1000 and would like to get it down to 700-800. I don't know if that much opening would be too much or would have any affect on the primary idle metering circuit. I guess it could the same way it could if the primaries were open too far...pull fuel from the boosters.