My cap on my tundra is a Glasstite. It’s a tall model with roof above truck cab. Anyway, the roof of the cap is NOT flat. It has a slight curve or radius. So I’m nervous about getting the rails as any hardware that slides in and locks in won’t be pointed straight up, they will be angles out a few degrees. Thoughts? I can’t be the only one that has run into this issue. My ultimate goal is to place an ARB awning.