[Richard L]

if you are running 100% water, 10-15% water to furl ratio is enough. So 220-330cc/min, it will be a 0.5mm to 0.7mm jet. Try a 0.6mm first.

Run threshold at 12 o'clock (default). Slow reduce it down to 10am.

Which version is your HFS3? Blue, black or red circuit board.