Cheers gents,
Yes the heads are slightly on the large side however as long as you avoid the ones with hair on them they seem to work ok and have a good feel about them. The trick was to chop the neck at the right angle otherwise the head sits too far down between the shoulders.
I had unfortunately thrown away the head gear many moons ago but I think they may ahve been a little small. I am tempted to do more some day as these didnt taske too long at all, just dry brushing and oil washes