Southern California tuning shop

well- I've done what i could in finding out why the car won't idle without the choke. I've pulled each of the Mikuni carbs out from the L28 and cleaned all the jets, but it still won't idle for some reason. I have fuel pressure, but i suspect it may be a fuel related issue as the car had been sitting for around a year. I did treat the fuel and added some new fuel along with some octane boost. So i figure it's time to take it in to a shop who know's what they are doing . I was hoping someone on here could point me in the right direction...a shop somewhere around LA county preferably.