The narrow gauge track on the asset will not join properly to the standard gauge track from Tane will it? I had that problem from the beginning, I just didn't notice the difference in gauge. The asset uses 2 items for each of the 2 tracks. Kuid:124060:38190 (NG36 Track 56lb Grey milled) and Kuid:124060:38194 (NG36 Track 56lb, rail only). The Config has track 1 and track 3 using the first, and track 2 and track 4 using the second. It would seem that the mesh or whatever superimposes tracks 1 and 2, and then track 3 and 4 to produce the two complete tracks. I just deleted the engine house from layout and CM, downloaded again, and the NG tracks will not join to the Tane 1trk wood tracks on the layout. I do not know for certain how the useadjoiningtracktype should properly be coded in the Config.
Track 1 &3 each use vertices a,b,c and track 2&4 each use vertices c and d.