prolly only ran 8 tanks of gas thru it....never ever ran it lean...i have a temp gauge and have always ran it within the low side of the safe range. engine has awesome compression so i know that is not it. The blue thunder gas actually has less oil than most gases...it has about 14% whereas most gases have 20% oil. like i said it runs well when i stay on the throttle but say i run it good and then bring it by for a temp reading and let it idle it just dies within 10 seconds or so and i know for sure the idle screw is adjusted good. i did ruin the low end needle o-rings but i have since replaced them and got it running again. The directions about going back to factory setting are not that clear but i'm sure i got that down as well. I'm just at a loss here. maybe the clutch spring is wore out but after 8 tanks of gas? that doesn't make sense. Any help will be welcomed.

Thanks