I was wondering if anyone could help me with setting my low end needle on my tower hobbies .46. I'm having problems with it shutting off. I know these motors have bad airleaks. I dont think I have any leaks now. But I also know that a low end needle setting will keep it from shutting off also. If I close it all the way, how many turns do I open it to get it set properly? Thanks for any help you can offer me on this.