I have been told by a star mower seller that the first revision clutches were no good at all and they have now redesigned them and they are now good. You can tell the new one as it is half dark and half light silver. Yours being light silver on both is the first revision as is mine. Mine has not played up yet (I am touching lots of wood as I type)
I found Macarther mowers in Sydney seem to know there stuff on these and where I got the clutch info. They might be worth a try for help or supply of a new version clutch.
http://www.macarthurmowersandmarine.com.au/ On another note does you clippings director shute fit in the adjusters properly as the tabs on mine are larger than the holes they go into.
