Aligning a boss to a loft

Hello,

Can anyone see if they can get boss-extrude 7 and its curve pattern to align to the rails so that the faces match on the upper and lower rail? I believe after two days of not having something right I should ask for someone with more experience to help. You can see that as the pattern goes on, the boss no longer touches the rail. The boss and rails must remain the same size.

Thanks for the time.

SolidworksParts And Features