Hi Alan, Yes, I have considered this matter and I have tried to explain to my son where there is value and I have suggested that he contact the club for advice. I think I am lucky that I have a son who I can trust with these things however he is not inclined to be a model engineer. Hopefully the problem will not arise for a few years yet. Ken Jones in really beautiful Berkshire. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.