sunroof leak on rrs

So I've been searching high and low to find more information on the plastic piece on the sunroof assembly guide rails. It has 2 little raised notches and is held down by 2 small screws. You can easily see them when looking into the car while the sunroof is open. My plastic piece broke and I was...

I thought I saw a thread on this already, but I could not find it. With advice from this site, I have finally gotten my A/C to work, quite well actually. So after patting myself on the back, I have noticed a major accumulation of water in the passenger side footwell. Any one have experience...