No, it can be solved simply by removing the track's ballast
image. There is not a need to raise the rails by 0.15m.
No, I highly believe that there is a need to raise the tracks,
because it appears that the C151, C651 or C751B "floats" in the
route, because the wheels are 0.15m high. Simple solution: Use
TranslateAll command and delete the track's ballast image.