Running a Saito 150, maybe an hour run time on it. I've got a Cline installed, and the remove needle has no sensitivity. I can go from 3 turns all the way out to 7 or 8 turns with no change in RPM. I'm using the stock glow plug. And I max out at 8400RPM, with a 15x6 APC.

I know this max RPM is low; it idles OK at about 2700.

Is the remote needle supposed to be this non-sensitive? It's spitting a lot of fuel out the exhaust.

Will max RPM increase with age?

How about the OS F plug?

Thanks for the help, B-ski