Hey Phil,
Talk about an authority when you are correcting the trade!
I didn't doubt your advice, I just come from a background of research and double checking and like to get my head arround what is going on!
Since i've got the spare dead car, I'm going to pull the valve body out of that one to work out what is what. It'll also give me spare parts etc. I don't know if it is wise just to swap the bodies then play with the problematic one or fix the problematic one. There is about a hundered thousand less miles on the problematic one and I know there wasn't much (if any) maintinance on the working one, though its an 02 model vs 98 so I don't know if there were any updates etc - I see that there is a Valve mod that ZF do if refurbing!
Thanks for all the help,
Lee