I am trying to design a layout using the double track with concrete ties sections, the curves are 20-181 and 20-182. I think they may have existed in an earlier version, but they are missing now. There are quite a lot of track pieces in the double track with concrete ties configuration. Is there any way to have them added please?
the 20-181/20-182 items are located in the Kato Unitrack N library in the current (6.1.x) releases of RailModeller Pro and RailModeller Express!
I, too, have not such an article as 20-181. Nothing between 20-176 and 20-220
Yet, I got the 6.3.8 version.
Where is the problem (issue)
Sounds like you're filtering the Library Catalog so it's not showing the entire contents of the current track library.
Is the filter indicator on (lower, left corner)?
Is any QuickFilter active?
A "filter" on a table temporarily hides the rows that we do not want to see.
In the Gremlin's example the QuickFilter is selected to only show plain, curved tracks and hide all other types of tracks.
The QuickFilter at the top of the Library Catalog allows to quickly filter track libraries to show only specific kinds of track elements. This can be used to easily locate the type of track currently needed, e.g. to show only turnouts or plain, straight tracks.
The buttons in the QuickFilter can be used to toggle a specific filter on and off.
When toggling the curved track filter off in the example provided we'll be able to see all tracks in the current track library, including special tracks like the double track elements such as the 20-181.
The Library Catalog settings accessible via the gears icon at the bottom of the catalog can be also used to turn the QuickFilter off entirely - if preferred.
When looking at the lower, left of the Library Catalog (not included in Gremlin's screenshot) the filter indicator will be visible.
It'll always show up when Library Catalog is filtered in any way. In the example provided it'll be visible as a blue icon.
The filter indicator can also be clicked to give a more verbose explanation.
When the filter indicator does not show up the Library Catalog is not filtered showing the entire contents of the current track library.
Hope this helps,