Hi Peter, I knew I had an article on this and went through my stash of old mags. I don't have a big stash, I have just kept or picked up stuff that interested me - mostly Cobra but a few others.
I have the whole article copied if you want it. I could post here or send it in PDF to your e-mail. PM it to me if you want. The PDF will read better as I won't have to resize it.