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Oddly oil is full. Checked with stick in un threaded. If I could post videos I would but it runs incredibly smooth. No backfires, pops, bangs. I haven't messed with any full settings. Air filter is new

Also valves seemed fine. Checked head it was flat across 3 planes. Pushrods I swapped. I torqued head bolts to 38 pnds. New spark plugs. Also swapped new coils. Adjusted valve lash .006. All fines on heads are clean and I usually clean everything few months. Also after I'm over 110 on...

I work on heavy equipment for living. Never worked on small stuff like this before. Oddly both cylinders had compression ratings above 70. Before I tore down I swapped coils to see if problem changed sides. No change

Looking for guidance. I own a 661r with over 1500 hours. It has kawasaki fx730v-as20-r engine. It is smoking like smoke machine and bogging down. Looking at motor carb side in front of me ^. I pulled left coil wire. Runs fine. Then removed right. Sputtered and barely runs. I put tester on left...