[brainbug007]

Ok well I think I'll put them on just to be on the safe side. Will these do the trick from a stainless grade point of view and the right type that you're refering to?

http://www.ebay.co.uk/itm/M20-HALF-N...item19cbbe85d7

http://www.ebay.co.uk/itm/M18-x-1-5-...item2308899ac5