Roof rail seal questions

A weatherstrip goes on first. Between the body and the roof rail w/s moulding is a flat, 1" wide strip of foam sealer. This seals the area between the moulding and the body. It comes in a long roll and should be glued to the body covering those screw holes from the lower vent window to the other end into the body. Then screw the moulding into place loosely and install the weatherstrip into the moulding. I say screw it in loosely because the holes in the body and/or the moulding are elongated to allow adjustment of the weatherstrip to fit the glass. Have fun.