Ive found a little piece of crumbled digestive biscuit (or hobnob) on the point of the hook will make them sit tight..
Got that wrong mate, I think you'll find theyre gluten intolerant.
Cheers, D.
Yes as a general principle D, however I normally do my weekly shop at Waitrose (when you live near Harrogate it's the done thing old boy) and they do a lovely gluten free biscuit range