After almost 2 years procrastination, I finally installed Rich's oversize O-ring on the cam position sensor. While I was in there, I also torqued the exhaust header nuts (all were loose), replaced the engine coolant, fixed my Rostra CC, adjusted my manual cam chain tensioner (didn't really need it) and removed all the sludge accumulated from years of oil weeping out of the cam position sensor.
Was surprised that after 6 years and almost 70,000 miles the coolant looked relatively clean and clear.