W116 D-jetronic trigger points

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Hi

Have a -73 280SE that is running rough.
Have replaced rotor, dist cap, coil, all wires, plugs (BP6ES 0.6 mm gap).
Installed Pertronix point-less ignition.

During the process, I discovered that cyl #1,3 and 5 plugs are black and cyl 2,4 and 6 are clean. Took out points and cleaned carefully, problem remains the same.

Replace trigger points?

I feel this is connected to the triggerpoints somehow.

Any thoughts?

Tom