Panzer may have a point but I would start with the ignition system and the cheaper components and then look to fuel issues.

Does it start fine when cold and then stall when hot?

Classic symptoms of bad rotor arm.

Do NOT fit a cheap one. Get a genuine MB replacement.

Why?

Because there's a 1 kohm resistor in the rotor arm that provides suppression. In my case this resistor failed at high temperatures.

RayH