The issue that remains is a knocking noise from the engine. I had hoped this was a lifter that would "heal itself" as the old oil worked it's way out of the engine from it's 32 years of sitting. But it's actually gotten a little worse. I posted a video of the engine running on the British Car Forum and asked for advice and got some good ideas. I also used a stethoscope to help diagnose the source. Bottom line is I am now convinced it's the timing chain tensioner. And it appears it will require removal of the front clip (sheet metal between front fenders) and radiator to get to it.
I plan to do this job after the local British Car Show September 17th. I also plan to trailer the car to the show and drive it minimally until the timing chain tensioner is replaced.
Then I'll be able to fully enjoy the car.
