Remove the lid and look at the common (U) post bus bar....the studs that are riveted to that bus bar are known to pop away from the brass strip. If they are, there are simple repair studs available with studs at both ends to spin a nut on the back side and lock it down to the bus bar strip......
as far as the throttle not turning off all the way, look at the arm for that particular throttle lever, and see if it’s coming all the way off the coil when set all the way back. .....hope all that helps........Pat
