[Perfectlap]

If you've got the cash and don't like to worry at night just upgrade the IMS bearing unit with the one sold by the forum sponsor flat 6 innovations.
I wouldn't wait for the clutch to wear out if you are a worrier. Take it to your local Porsche specialist and git er done. You'll have a new nicely working clutch good for another 10 years and you'll have reduced the possibility of having to cough up $15K for a new egine job. Avoiding that possibility is worth more to me than trying to squeeze some more life out of the ageing clutch. Doing just the RMS (no clutch) I think is about a $1200 job. Maybe less if they've done a few and are efficient.
They say its rare for the IMS to wreck the engine but just on this board I can count four that have occurred (two by the same forum member) to existing forum members, meaning they were posting before the catastrophe and not because of it.