serious carb issues

I've been dealing with carb problems for over a week and using the info fellow FABO members have given me is working.
You need to open up the secondarys till you see the slot.
Adjust you primary to lower the idle.
Check your vacuum at idle, sounds like you need to change the power valve, if vacuum at idle is say 6 you need to run a 4 power valve in order to get any adjustment on the mixture screws.
I think you need a little more intitial timming like 17
Good luck carbs can take a lot of time to get tuned, I'm no expert but all the members here have givin me advice that works.