Please don't kill me if I someone already asked, but I did try the search function on this thread. I need 3 needle carb settings. I purchase a fresh pinched gxii and have it broken in but mid range needle had been removed during rebuild by previous owner. Have about 5 tanks thru engine at 180-240 degrees varying temps to cycle heat. I can not get engine past mid range point without quitting. I have the hs needle in about 1-1.5 turns in from flush and I have gone the other way too with the HS needle. It doesn't seem to matter what I do, it wont get passed a mid range throttle point. I think the mid range needle might be the issue. I am not a supper nitro buggy guy. Really experienced with heli motors with rings and 3 needle carbs. Hate asking for help, but need it!