Here's an update.

Changing the OVP Relay lowered the idle RPM from 770 to 670. That's good, but it didn't fix the rough idle.

The spark plug in cylinder #2 was getting fouled. I tried swapping the injectors, plugs and ignition wire with cylinder #1. Each time it was #2 that got fouled. Last night I swapped the ports in the fuel distributor. Fortunately you can do this with #1 and #2 without having to bend the hard fuel lines. Not only did the fouling stop in #2, but it has not fouled yet in #1. The idle is much much better. There is still a slight stumble at around 1200 rpm when accelerating from a stop.

I'm now assuming that I get a bad fuel distributor. It must be pumping too much pressure into that port. I assume that the bad distributor is also responsible for the stumble. I'm not sure why it is not affecting #1 as much as it did cylinder #2.

Am I on the right track? Is it possible for a distributor to go bad in one of the eight ports? I'm thinking that some dirt has lodged itself so that a valve is not closing all of the way.
~Dave

P.S. Yes, I've have used Techron in my gas tank several times. It hasn't helped in this case.