Carbs are balanced. EGTs equal at all power settings. Temperatures all good. Plugs and caps are good. All jets and needles new. Throttle cables are fine and not sticking and prop is balanced. Rubbers and mounts in good condition. But yet cannot get a smooth running engine. Always a shake throughout power range. Smoother at 4000rpm but still a slight shake of carbs. What else could cause a rough running engine? Appreciate any input.
