Hi, Can anyone kindly give me some advice on my 1981 Silverwing GL 500 that can not maintain an idle speed around 1500 RPM but at least 2400 RPM? If I adjust the throttle stop screw to lower the RPM, it seems only the right cylinder keeps working but the left cylinder ceases to work, and the RPM can drop to 700 to 800. I just did the TLC, but the issue still remains. Any suggestions? Thanks!