Created a file with high density (1km) distance tickmark shaping waypoints.
Short_1km_ticks_import.gpx (59.6 KB)
Due to the high density, it is virtually harmless to remove a badly located one
But coincidentally the result here was also 100% u-turn error-free.
The resulting .kurviger file.
Short_ticks.kurviger (15.5 KB)
Disturbing anyway are the many Shaping Point map Icons.