Instead of the 'Stringer" flight/landing, try using the 'Beam' type.
The beam sits under the treads, and you can use the 'Open Stringer 22' beam.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11