I took it in and he fixed it for me before I even had a chance to walk up the road to get a coffee.
He said exactly what Brendan said... it was about the solder type. It now has shiny silver solder on it now.
He did warn me though that the solder bond is a lot stronger now and therefore if it happens again it will take the pads with it.
Either way, very happy that my filter wheel spins again.
Thanks all for the great advice and calming influence
Entropy