... of a puzzle how these problems have arisen. For example in the loop line (I extended the templates to see the slight kink at the boundary): 2_131502_060000000.png It is not much, but it's at an untransitioned reverse curve and is enough to see rolling stock lurch slightly when running over it, roughly equivalent to the deflection of a C-switch (which would have a speed restriction). With the gauge freedom in 00 it might go unnoticed, but in P4 the wheels track the rails quite closely. And: 2_131505_070000000.png which obviously needs fixing before you print the templates. I haven't checked any other areas for similar problems. Sorry if this is not what you wanted to hear, but it is much easier to fix things on the computer screen than on the baseboard after laying the track. regards, Martin. posted: 13 May 2014 20:38 from: Dave M Hi Martin, That isn't the crossing that I'm planning to use...I'm looking at a simplified version of the scissor crossing (seen above that one in the thread ...