1.5 to 2 turns out from gently seated is a good starting point.
Then once the engine is completely warmed up follow these steps.
1. Set the idle slightly high (1800-2000 rpm) with the idle screw.
2. Lean out the mixture (turn it in) until the idle peaks. Stop there where the idle peaks.
3. Richen (turn it out) the mixture screw an 1/8th of a turn.
4. Set the idle screw to the proper idle.
Give it a shot after that, I typically am super happy with throttle response after that adjustment. Good luck!