Ok so I recently rebuilt the carb on my blaster and changed spark plug and it ran really good. After a few weeks, now it drives good, but then when i pull in the clutch to slow down, half of the time it will stay running perfect idling, and the other half of the time it quickly dies when pulling in the clutch and slowing down. It also does this sitting still and idling. It will idle really good, then randomely die after like 40 seconds. Whats going on?