I have a 2HP Jiffy Stealth and I believe I may be missing a return spring on the carb. On the bottom of the carb there is a gold "L" shaped lever that opens when the throttle is opened. It has a screw to stop the lever when it returns to idle. When I open the throttle the lever moves, but when I leave the throttle go the lever does not return to the idle position. It looks like there is a hole there for a spring to help it return. Can someone check theirs to see if a spring is attached? Thanks