So I had a chance to pull the slide in tonight. There was quite a bit of water pooling on the roof of the slide. It got passed the slide topper, passed the seal/gasket, and collected where the roof of the slide meets the inner lip of the slide. I suppose it doesn't help that the slide kind of bows down in the middle.
You can see on the picture the spot where the water was pooling. I used a towel to soak it up and now I'm using a fan to help dry it, but it was that little seem on the left that let the water in.

In the near future I will lube the seals, but in the event that water still gets through, I don't want to make its way inside the rv. It already damaged the "wood" in a couple spots and I'm pretty torn up about it.
I'm thinking about using some dicor on that seam. Any problems with doing so?
I also checked the little window which would be behind the drivers seat. It looks like the PO put some silicone caulking over the top part of the window frame, but not the rest. Looks like water could maybe get in here as well...through the sides that they didn't seal and the part of the seal on top that is peeling off. Should I peel the silicone off and use dicor here as well?
Thanks.