Loaded the bike for a camping trip about 90 miles from home, the bike ran flawlessly going up, and a 40 mile ride Saturday morning, but started coughing again on the way home. Got gas, rode another 40 miles going home, coughing and spitting again appeared. 12 miles from home, had to shut down the engine due to failure to accelerate, and minor "knocking" coming from engine. Loaded onto the trailer, removed carb bowls yet again, jets and bowls appear clean and unobstructed, but blew out all and reinstalled, short test ride started out good, but once engine was good and hot, would not maintain power up hills without severe coughing and backfiring from one cylinder. Suspect valve clearance issue, and will remove valve cover next weekend to check clearances. Thanks for the input guys!
