sorry i didn read through the whle pst, either you have a bad batch of fuel...... verify it by spotting a buddy of yurs a tank in his ride......... OR you might have the low or high end needles valves too rich, or a bad plug, .............. usually when u have a bad plug it wont stay on with out a glow plug igniter or has a rough idle...... if u dont have a designated RC CAR glow plug, u can always get one from one of your model airplane engines, and it will work fine



also make sure all the parts on the carb are the way they are supposed t be, tight, centered.....etc