[sammyg2]

Theory is confirmed, the O2 sensor needs to be connected to only the inner wire.
I installed a new connector to the inner wire and the lambda brain is now functioning correctly.

I also did an injector flow test. #4 was flowing about 20% more than the rest. I replaced it with a good used injector.
The mixture is steady at 14.5 to one, but it wants to run richer under part throttle. the O2 sensor is compensating and keeping it where it should be.
I can get it to pass smog now but I am still wondering why it wants to run richer under throttle than at idle.
No vacuum leaks, I set it at 14.7 to one at idle with the O2 sensor disconnected, and as soon as i get going it goes to 13.5 to one.
The O2 sensor will adjust that but I sure would like to solve the problem instead of compensate for it.
The only thing left is the fuel distributor. I disconnected the throttle switch for a run to see if that made any difference, it didn't.