More refined work done on bogie/axle area. Corrected one issue found in this area. All tests conducted on cars downloaded from "Invisible coaches after last Exp.-Release" post passed.
git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@2452 a9f3cfff-6c41-7446-b0ca-052bd761e6eb