[hughc]

I'm on the road again. The shop that originally diagnosed the problem replaced the coil in the distributor and I sent the CDI unit to Bob Ashlock for refurbishing.
Meanwhile I had the car towed to my garage rather than leave it outside at buddy's garage.
I tested the coil removed from my distributor and it measured 585 ohms, so it seems the replacement was not necessary.
The repaired CDI was installed Mon evening and the car fired right up.
So other than checking the timing everything seems to be OK.
The tach however is all over the place, much worst than previously, so I guess that's another problem for another day.
Thank you all for your assistance.
Hugh