Recommended starting point for jetting on Thermoquad

Rumble,
Tried to PM, didn't work. Probably me doing something wrong. Yep, the top pic shows the underside of the sec high speed air bleed. Where that comes through the top of the air horn it necks down, pinched [ like the IFR tube ]. That pinch should be opened to 040 if it is not already 039-040.