bladett, you have a PM...

Did you take a shim out when you ran it on 30%
A touchy needle suggests perhaps too much compression (for noe thing ) or too much nitro...the pipe selection plays a part in that too.
Maybe try a plug one heat range cooler and maybe one hotter?

Jaka...it's a car engine w/ a turbo plug. (Mario Rossi, and formerly known as a Ninja )