After 12,500 miles, I finally adjusted my valves on the GZ. I got the general impression that over time the valves tightened up. My intake valves were at .003 and my exhaust valves were at .005. What gives? I adjusted them to .002 and .004 respectively. I can tell the difference for sure. I also tinkered with the carb as it was running a little lean. I had noticed the coloration on the exhaust tubes and now it is running much better. The plug also looked a little grey in color and I think it might have been loose. What is the torque required to install the plug? Someone suggested 15lbs. Anyone have any advice or input
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