thanks so much for all the valuable information and help.
I'll see what/who I can find to help me out.
by doors, I mean the folding doors on the side of my van that are operated by a switch and use the same compressed air as the brakes to function.
I was quite shocked to find a picture of
my van on Travellers Homes:
http://www.travellerhomes.co.uk/?p=10015
I guess Gary Conway has a very keen eye!
I'll see if I can put an artier pic or two up on here...
all the best
Mark