... event that an existing transition curve is zero-length, selecting the 2nd radius option fails -- the 1st radius is always used. Sorry about that, I will get it fixed. In the meantime, the workaround is to put the peg at the 2nd radius end, and select the at peg option. Zero-length transition curves are not often used, so this won't affect many. But they are sometimes useful, for example in creating a symmetrical Y-turnout with straight exits through the V-crossing: 2_222120_040000000.png regards, Martin. posted: 7 Feb 2016 17:49 from: Martion Elsworth I've been trying to find the Make Transition function but can't- where is it please?Martin Elsworth Martin Wynne wrote: There is a bug in the changes which I made recently in the make transition function. In the event that an existing transition curve is zero-length, selecting the 2nd radius option fails -- the 1st radius is always used. Sorry about that, I will get it fixed. In the meantime, the ...