I know I'm double-posting, but here's an image I made that shows one
possible way to allow Bank trains to be turned more easily at
Kennington.

http://dynamic3.gamespy.com/~ff9/iko...new-layout.jpg

I know that this new layout is probably completely impossible to build
(I realy have no clue about the structural and engineering constraints
of the Kennington tunnels), but it's one way of fixing the problem...

Brad