Mondeo sunroof rubber seal replacement

[dan76n]

Hi all,
I’m wanting to replace the rubber seal that is on the sunroof of my MB titanium?
I’ve flushed out the drains a handful of times and water is running through ok but whenever I get decent rain the channel seems to flood and I get wet carpet so I’m thinking if I put a new seal on the glass it might reduce the amount of water getting through that needs to flow out the drains.