You can buy flanged ball bearing from most bearing factors but you will have to add your own bolt to make something very like the devices I found on 'merkin sites when searching for glider rocker bearings.
I found quite a few on the Simply Bearings website.
Cheers Bob i wil go and have a look. I was hoping to get a complete kit/set.
I have a friend going to the US later this year i may bend his ear as well. Wil definatley look at your suggestion though