Thanks for your comments, Peter. I rather like the spinner as it is but you may be right. I'll give it some thought.
As for the undercarriage panel, you're clearly right. i find it a bit dull but I didn't want to put to much weathering on it. I'll add some dirt and oil streaks on the next template update.
Here is Supah's Havanastang:

The original model (preserved in La Havana) is in very poor shape and doesn't look as good, unfortunately. I find the 51 actually looks nice in those colours.