I disassembled the regulator, and flush it with fresh fuel. Everything seemed fine. Tried again. Working on both the regulator screw as well as the HSN I was able to get it to spin at 7700 RPM, with some misting coming out of the carb, especially during transition. We are not talking
loads of fuel, just small droplets. It holds idle well at 2000... What else could be wrong?

Alberto