Thanks Tom! I see I'm in good hands. Shame my little Mac plus isn't! I'll work through those suggestions. The board looks very wholesome though the pram battery leaked over the steel chassis. The C33 blew when I first plugged it in but I've renewed that along with it's neighbour. Now I have the "clicking" back and it's the onion to follow..... What grim masochism drives us to this activity?