Hi I am wanting to build a 3 car corridor push pull set as ran latterly on the KWVR after corridor gangwayed coaches were introduced to allow the guard to sell tickets. The very helpful man at Sidelines has suggested two dgm D1905 converted corridor brakes with a D1999 open third between. This looks right apart from the window openors o the driving trailers which are much smaller than the centre car. Any more pics Any help with some numbers would be appreciated.   Picture attached (Courtes