Well it has been a long time but I've now got my ducks all nicely lined up.

I took the rocker arm towers (all five of them) to a machine shop and got them to mill off 0.5mm off of the back surface of the tower where the rear most rocker arms sit.

You can see this surface here in the picture below.



I then got hold of some 0.3mm and 0.2mm steel shims so that I could "add metal" to the other side of the rocker arm towers and position the forwards / front rockers.



If you didn't know the shims were there - I think most mechanics would miss them:-



I'm now one happy bunny. The rocker arms sit nicely under the cam lobes - I can now (finally) adjust the valves!

Small print:-

This is not an authorised modification - so if you don't see shims between your rocker arms and the rocker arm towers; that is OK, that is how it is meant to be!

I'll keep you all posted on how I get on with this.

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!