Thanks. I'm pretty sure the car isn't running lean..I've had a co2 meter on it, and all is good. It's a little rich if anything, certainly at idle, although only by a percentage point or so. It does tick over a little roughly however, I imagine that is down to a need for fresh inlet manifold gaskets and plenum seals, ( I replaced all injector seals) but that is a question for another post. Once off idle it is as smooth as you like with great power and immediate pick up, so I don't think there's much wrong there.
I don't move the lever around when at a light etc, and I do use the parking brake when I leave the car, although I can't say I'm a fan of the Mercedes handbrake physically.

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1971 W111 280se rhd coupe (The Duchess)
1959 Bristol 406 (Monty)
1970 Volvo Amazon 131 (Lola)
Lives in Cornwall, UK.