XT600 Pilot Screw Setting?

Hi all. A few months ago I was having troubles with my 1991 XT600EB. It wouldn't start - ended up just being a bad coil. In the process of going over everything I pulled the carbs and cleaned them out good. I took care to write down settings, etc., but somewhere along the way the pilot screw setting must have gotten goofed up. The bike starts and will stay running at idle with the choke on until it gets closed about 2/3's in. When it's at speed it's fine, but when I pull the clutch in it will stall. From what I've read I'm understanding it to be lean. The bike is getting hot and backfiring in the carbs too. Again, I'm guessing I don't have the pilot screw set right. I've been playing with it, turning it out a little at a time and it seems to be getting better, but I'm out 3 turns now and it's still having the same symptoms. I have a manual and a service manual for it but the only setting it gives is the pilot air screw (2.5 turns). Does anyone know the correct amount of turns for the pilot screw on this bike? TIA