Found it! Stern slingshot bolt thingy (ignore me)

[windoesnot]

One of the post bolts holding the slingshots in place has gone, its 2 1/16" long and fits inside a 1 1/16" clear post (http://www.pinballheaven.co.uk/shop/stern/clear-post-550-5059-01).

I've no idea the part number and cant find one in the manual.

Thanks