240D

Smooth idle at startup, engine wobble/oscillation after engine reaches operating temp (The side to side type of wobble).

Valves are in spec, engine mounts are new, fuel pump is rebuilt, overflow valve spring by greazzer, rebuilt injectors ditto, diesel purge for the hell of it (came out pretty clean), no fuel leaks, air incursion or visible air bubbles in temporary clear return line.

Here's where I'm at...

I've read through the archives and found evidence to support either
a worn IP delivery valves, or worn engine shocks hypothesis. The delivery valve hypothesis, I admit, I'm not totally clear on. The engine shocks, however, seem to lose their ability to stabilize after they've been heated by a hot engine (see this post: http://www.peachparts.com/shopforum/diesel-discussion/43751-300td-hot-idle-shaking-apparently-solved-3.html). Thing is, I can't find many who've either replaced them and noticed much difference, or ever touched them at all (and one or two who have and are adamant this is the issue).

Both are about a 50$ expenditure but I'd prefer not to throw parts at the problem if it's something I haven't considered. I'd also prefer not to tear into my IP if it can be at all avoided.

Any ideas from those of you who've been there?

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1981 240D 4sp manual. Ivory White.