Gilly - did the lubing today. We found out that the "bushing" needs to be replaced. An order has been placed from Germany as no local stocks were kept. My particular model is a direct import from UK, and thus many locally assembled 300SE may not carry this feature.
Will post update when part arrives ... one months' time.
Is the bushing the same as the actuator?
126 tailed by a 203, 129 leading the pack.