hi monty, whose rex welch? anyway, question on GXII. Practice run and engine runs good. Idles great. I wanted to put some more low end grunt. Using Losi 2 alum/green 2 comp./gold. So i adjust 1 hour on low speed needle, blip blip blip blip / WOT and engine dies... returning back to its setting 1 hour back, engine runs good. Why is that so?

Thanks,