Road Runner Nest

I have paint seal kit from DMT and there are two different gaskets for roofrail. i understand that adhesive backed strip goes between body and roofrail channel,but what about the other one (foam gasket)?
There is no info about this in service manual.

Did I ask something stupid or what?

I am not sure there was a gasket for the roof rail. Hopefully some one else can help on this one?

no is caulking on roof rail.

(foam gasket)? no