I AM FURIOUS. This all started with me wanting to simply upgrade my cns carb to a RT carb from thatsdax. I made a new intake manifold that was offset and shorter than my previous intake. I hook up the carb and begins a high idle. Check for air leaks, none, sealed up joints anyways. Duane at thatsdax suggested a bigger jet size thinking it was too lean at idle. swapped out the 70 for a 75 jet and rode it down the street to warm it up. KAPOW engine starts making knocking sound like Broken - YouTube. It happens if i turn over the motor without the motor on as well. Took of head, plug was darkish slightly wet. saw imprint of one of the piston rings on the top of the cylinder wall but dunno if that has any significance. Now i have a loud as ****, slow, & weak bike. Duane hasn't been able to help much some people have suggested testing for leaks, none.. so WHAT NOW!?