The factory flock-covered steel strip is no more on my 1992 sedan. What's OEM is now terrible on the 1992 and in posts here.

https://www.brickboard.com/FAQ/700-900/BodySunroof.htm

You will find suggestions here as the topic is treated here. One response I recall is someone using a good solvent free cleaning and using some type of adhesive with a strip of some quality of nylon. Nylon can be abrasive versus paint and metal.

There may be a solution that adheres yet is tough and compliant as the roof moves. A quick web search offers solutions. Yet OEM is not so good failed for me and others. Yet folks have better solution for the moon roof edge seal.

The sunroof pan that contains the moonroof assemblage has a drain at each corner. The rear drains route for the c-pillar, through the boot or i forget on wagon.

The drain has a union in the truck. People use different stuff, like apt bottle brushes, to dislodge a clog. You'd have ot remove the liner though to get to the pan. Try some way the the drains. The front corner drains are in the door frame outside or the gasket, or course.
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