[MP4][Valley] Old road halfpipe models used?

[BigBang1112]

I think halfpipes were changed in the process of beta.
https://youtu.be/x_xMzM7bD4Y
I think this Valley C13 run was from beta 4.1. I could fly over the fence every second try.

Now, the halfpipes seems same like in MP3. Flying over the fence takes every 15th try. I can see a difference of that, I spent 15 hours playing this C13.

My thoughts are the old halfpipes from MP3 were accidentaly compiled into block instead of the new one. But I don't know, there's something wrong with them.