I've used the Bestop soft top protectant twice now, and it seems like after it rains, it leaves an "oil slick" on my glass side windows where it drains off the side of the top. I now see some of this going on on my paint between the bottom of the side windown and my fender flare. Has anyone ever seen this before? How do you get rid of it? I tried regular window cleaner and then tried vinegar, both to no avail. It's only on the outside luckily, but have no idea how to remove it. Thoughts?