so i had problems with bike dying on me after couple of hours and wouldnt start back up, eventually i tinkered with stuff and it seemed to run again until it got warm again and did the same thing so through google and friends letting me ask questions i thought it may be coils and or regulator so i replaced them both so now i try to start it and it wants to backfire but will not start i tried for awhile and nothing just the same so i put it back in storage where i forgot my key in the turned off position but now for the reason i gave all this info....so when i opened the storage just a few mins later it smelled like gas , i learned not to twist the handle and add fuel to the start procedure, so when it was running and the coils were bad i saw my dad mess with a screw by the filter i think it may be something to do with how much gas is delivered , so now that i have new coils on and new regulator does that screw need adjusted to change the delivery