Landscape splines

Whenever i apply the spline mesh to segments it will first appear oriented the wrong way (x) and then when i flip to Y, it either places the whole thing above or below the landscape. what could be casing this?

Ive been at this for hours. Initially i baked some transforms for some meshes which are a part of the spline mesh, but it worked fine. when i went back to tweak some things, basically readjusting scales, it became like this