... seem to edit between photos, nor can I stitch the photos together. Perhaps I should have taken a Panoramic photo In the top photo there is a strange bar between the rails, may be some form of locking mechanism, but why its there? The second and third photo shows the different plate under the crossing nose chair. Upper check rail has 4 2 bolt check chairs and one 4 bolt, lower check rail chairs 4 bolt chairs. Bottom photo shots sleepers of varying lengths Here is a close up or the bar 982_210308_130000000.jpg posted: 21 Aug 2014 08:46 from: Phil O Hi Hayfield There is a probability that the original check chairs cracked due to excessive forces or bad casting and were replaced with what was available. The plate under the nose is the GW standard Slab and Bracket. see this link and scroll down to see a slab and bracket on the ESR. topic 184 Finally the bar is a an adjustable tie bar used to stop rails spreading out of gauge, usually used where the chairs are a bit loose on the ...