OK yous guys, ensure that your crankcase vent is unobstructed too.
If I recall from the Nor'East rally, Steve's ride has a jingle sound while at idle. I bet if you guys pull your left engine cover you will see something amiss. The early clutches had an issue with vibration and such. A factory fix has been conjured up and Pat can speak to the details of why the older clutchs are somewhat out of touch with fluid dynamics.
Another member had to replace his oil pump gears. Have a look see at those gear's teeth too. (while you have the left cover off).
Dazco, Pay no attention to that sparkplug behind the curtain!

He is an old spark! hahahhahahahah Hey newt? Can you dig it brother?