Talking to John on the phone a couple of days ago…when he removed the screws holding the track to thr “roadbed”, the track jumped back out to a bigger circle, but the road bed stayed put.
The slip joiners would have allowed the rails to pull back had it been only the track.
Llagas is SUPPOSED to have the rails tight in the ties.
That’s what allows it to “hold” a curve.
John is checking further.