Finally and regarding the reduced louvres: at the 2009 Centenary, a well known senior MSCC member boasted of the weight saving his fully louvred bonnets had over my bonnet.
I think he's mistaken! The louvres are just pressed out...no metal is removed is it?

Nick
Ah ha!
Good point
That is Simon's point I think - having a bit of a grin at the senior MSCC members expense
Some of you MSCC members will probably know who it is