Well on the advice of members I sourced a new steering damper (Stabiliser), via Flea bay for £26 including free P&P. It was listed as an Merc SLK part and was made in Brazil of all places! Fitted it today and it went straight on! Well what I can say is THAT IT HAS MADE A DIFFERENCE! It's not 100% cured the issue, but I would say it's 80% better. I consider that a right result for £26!! Also bear in mind my 06 car has only done 22000 miles from new.

CHANGE YOURS NOW!
Still concened about the play in the Universal Joint though. And it looks a pig to get to. Chrysler UK want £175 for the part. Any thoughts folks?