... worst case. I've prepared some diagrams to illustrate the problem, and a few ideas. The problem is not only the wider than scale flangeways, but also the reduced 00 gauge means that the whole diamond-crossing is much shorter than scale. So even though 00-SF and EM share the same flangeway (1.0mm), the problem of finding room for the K-crossing check rails is much worse in 00-SF than in EM. Here you can see how much shorter is the 00-SF version: 00sf_em_slips6.png Both are 1:6, using the 1:24 slip switches (i.e. deflection the same as a 9ft or "A" switch). But the EM version has a slip road radius of 60", whereas for 00-SF it's down to 48". In EM I reduced the K-crossing check rail length to 120", with the flare length reduced to 30". I also reduced the flangeway end gap to only 1.3mm. The result is that a working check rail can just about ...