Have you tried Doug at Heathercraft he is a fountain of knowledge and gadgets.
Have you tried Doug at Heathercraft he is a mine of useful information and help.
Heathercraft advertise in Machine Knitting Monthly magazine. If not you just google heathercraft.com
Hope this helps.
If anyone is still looking Sue Woolley of Woolley Weights fame is about to launch her own website and will be selling the weights through there.
Will post the name when it is up or let me know and I will get permission to post her email address.
There is a set of two on eBay at the moment. Start price is £9.99 plus postage.