Is there a drain for the track that the roof rails slide? There are also some other little square nooks on the roof that can hold water that only have a screw at the bottom. Are these areas a concern for water/rust/corrostion?

Is there a drain for the track that the roof rails slide? There are also some other little square nooks on the roof that can hold water that only have a screw at the bottom. Are these areas a concern for water/rust/corrostion?

Any water in the roof rail channels should run down a-pillar in the front.

The sunroof has, I believe 4 drain hoses. Roof rack, zero.

everything seems to go down my A-pillar

There is a grove in the roof rails (front to rear), I had researched this as a place to run a CB antenna from the rear to the front if using a rood mounted magnetic antenna. Whether it is designed for water drainage...don't know for sure.