No Probs Mark, Good to me you and the missus, and glad you like and I could help.
I've changed so many back boxes on classics I reckon I could do it with my eyes closed.
M3 is likely to be going at some point and if the right person offered me the right money at around 7.5K for it, it will go.... As others have said you will soon notice none of my cars hang around for long.
Hopefully catch up at one of the meets again sometime.