I did got your email. I didn't answer yet because i didn't have a fast answer. I don't play RB these days, i just answer here if giving help is simple enough
I would have to look through the old files, see if i can remember what's there, see if i can re-understand and do something, and if so, i'll reinstall the old development tools and will try to make an update. But it will take some time.
(and i haven't forgot about an older request of Bletchley with respect to a variation of an engine type)