Not sure what the engine is exactly but Zetec block, 2.1, CVH head, forged pistons etc etc runnig at T3. Fitted to an Escort RS Turbo.

Cam is fine, new lifters fitted and tightened as they should have been at correct torque and method. No reason to think oil pressure is low. Engine is spotless inside.

But there is a light rattle, comes and goes, but mostly its there, sounds exactly like one or two lazy lifters.

some of the rocker arms will move in a twisting motion if you try to make them, as if they are worn, but they dont look obviously worn out, some wear marks but not trerrible.

Questions, anyone have any ideas? Also, do the rockers need replacing sometimes or is it never heard of? Should the fulcrums "fit" nicely in the rocker because these dont really, but I am being picky there.

I would assume from the spec of the engine that it was built by someone who knew what he was about but of course you never know.