... screenshot shows the layout of the crossovers that I have been referring to. You can see that there are two separate crossovers that have both sets of long timbers conflicting each other in certain positions. Hi Michael, The position of these long timbers is not critical -- they are carrying only plain chairs. You can therefore move them forward and back as necessary until they do not conflict. You could also shorten them a little if necessary. Ideally the spacings should be not more than 25" centres at the rail joints. 2_210851_200000000.png You could argue that some of them should be replaced with plain sleepers where you have a wide crossover. This will depend on the practice of the prototype company. Possibly one long timber across all three tracks at the centre, and the rest as plain sleepers. regards, Martin. posted: 21 Jul 2014 18:52 from: Michael Woolford I think I have managed to achieve something that is acceptable; it's taken two days to get it to this stage with thanks to Martin. 2786_211343_240000000.png You will see that I ...