Great stuff Charles. I've finally found that magazine with the scale drawings - it was older than I thought, from 1999, so no winder I was looking in the wrong pace!
Apart from the very detailed scale drawings, there's a full article, with a couple of good pics (including the two MkVs in flight), covering testing and flights from the Great Bitter Lake, and the intro to a conversion using the Hasegawa 1/32nd scale Spit MkV kit.
If you'd like a copy, PM me with an e-mail address, and I'll scan it all and send it to you. Think Evan might want a copy too.