I finally got around to testing it out again with the silicone stripes on the outside of the floor. It was alot better than last time, but still had a bit of a sliding problem. I guess it just needs a thicker coat of silicone on the stripes.

I haven't hose tested it yet like I planned to, but I did get some rain last night, and I didnt see any sign of any leaks. It was just a light slow rain, but it rained for a while. Also had NO condensation at all this time. The seam at the peak of the footwall hasn't changed, so I dont think its going to try to spread any, so it seems no patch will be needed.