Hello, I was doing this contract and I noticed that after instal the rail section as you can see (in the picture inside red circles) the rails appears to be passing under the ground below the base of the buffer stop which still remains after the rest of the buffer disapeared.(yellow circle)(should disapear too).
I think that the base of the buffer should disapear too and the rail section go straight and leveled between the to ends of existin rails.
Greetings and keep it improving the game.