Problems of burning rotor 500SEL '86

[rroos]

Gents,

I've got an old 500 SEL 0f 6-1985.
It has the newer type Bosch ignition (no shunt-pre-resistors/vorwiderstand), type

B.

Transistorz0ndanlage ohne Voruviderstánde TSZ 8z.

It has a much to high current, and the rotor burns/melts.

I did already do the following:
-Replace spark plugs (proper resisttorless NGK 0.6 mm)
-Replace spark cables (BERU)
-Replace Distrubutor cap.
-Replace rotor (1Kohm)
-Replace ignition bobine (with proper 12 Volt new one, a modern sqyare one)
-Replace the mass cable under bobine to motor

Any one any tips?
I think i'm down to replacing either:
-Distributor house (or part in there?)
-Bosch electronig ignition module (aluminium box)

But before I go on, any advice is welcome.

Thx, Roland.