I'm new to these great little machines. Put one on a small trailbike and had to remove the carburetor to fit it. Reassembled the carb and it runs well but won't throttle down so it races at idle or goes too fast in gear. I checked the cable and it seems OK. I may have re-assembled it wrong. Does the C-washer go on top of or underneath the C-clip on the slide needle? Is there a site that shows the assembly sequence? Thanks for any help.