Anyone have carberator trouble with their Stihl FS100RX trimmers? Every year mine has carberator issues, carb kit in 2008, new carb in 2009 and now it is killing when I let off throttle. It also sometimes boggs when try the throttle up I have to feather throttle. Am I supposed to kep setting the throttle everytime I use it? When it is running good it is a good strong lil machine. I think it is a piece of s*&^ myself!!!