Thermoquad idle issue

RPM fluctuating 800-1000
Timing about 22
Both screws set out 1.75 turns
Yes, turning them in will cause a stall
No, to the float level
Dist vac attached to OSAC valve and then to the port next to PVC hose and mixture screw front of carb
Again, slightly closing the butterflies smooths out idle and increases rpm

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