my blaster is up and running with a 280 main jet but i have a 290 and a 300 its the stock carb kn filter no lid fmf pipe boysen reeds .040 overbore all ive done is fired and checked for leaks not rode it kinda scared to you think im close to the right jetting to start with id hate to trash a new motor should go higher what are u guys with similar mods running