Hi all and thanks for your comments.
I remember the introduction of the RM when my father was working at LT. He showed me a picture of a prototype being tipped sideways until it started to topple. It reached 45 degrees. That really stuck in my mind.
As far as tips for building this kit, I guess it is is like any other where there are hundreds of parts. Take care to get everything lined up perfectly. If you are a degree out early on it will magnify as you start fitting the final pieces. One thing that the instructions don't really cover (in my mind) is that the inner window edges of the side panels need to latch over the narrow inner side panels which are used to key the seats. That will make more sense when you see the pieces, Other than that it was quite straightforward. I am not an experienced model builder but was at ease with this. Expect to take longer than you think...
Good luck.
Colin