Hello all. Fixing up the new/old bike we picked up a few days ago. (1981 CM400C) The specs say spark plug gap should be 0.026 to 0.028 so that's where I set it. But in searching around on this forum I've seen mention of a 0.035 gapping. She fired up well and throttled up smoothly when we picked her up Sunday. The plugs that came out are gapped between 0.03 and 0.035. Put in the new plugs and it was a difficult start up, tried it w choke and w/ out. Once it finally fired up the engine would stumble and bog down when rolling on the throttle. Didn't smoke or back fire. And once it got over 2500 RPMS it seemed to run better. Would you say that sounds like the result of too narrow of a gap? I'll pull the plugs tomorrow and see if there's any sign of unburned fuel.