Hi,
I think your problem is that you didn't snap your rail curves to your profile curves. Hold down the V key, and gesture with the middle mouse button. Here's a video on the alias site demonstrating the proper use of the birail 2 tool. You can check out demos of the other tools too.
https://www.alias.com/glb/eng/communi...itemId=1100073
Good luck and have fun.
Many of life's failures are people who did not realize how close they were to success when they gave up. --Thomas A. Edison