Thanks George,
I am unable to access the net on my computers at the moment so I am using the local library,and their system blocks your attachments.I shall go over all the points you raise.But the fact that plans which I write from stock or my older designed airfields to these latest airfields work, is a sticking point.I have never put runway centre lines down,because I can not remember if they were used in WW2.I did not realise that the HS was critical,but I will check them.I did not know what was generating baggage carts,but the ramps may be too small to accept larger aircraft.
Incidentally,looking at 140 airfields,the ones with big files have up to 36 dispersal pans(aprons),and they are 30K each.Spectacle disperals,drawn with taxi lines are only half this size.
Thanks for your time.