Novice soft top question. I just installed my Bestop Supertop NX (bought slightly used from another owner) and the fit is great. I ran it with the sunrider flipped back for 2 days and noticed a small crack in the rear window (see pic). It's about 1.25" long. I did not open any windows while having the sunrider flipped back. Temp was about 44'F, so it was a little chilly, but I wanted to enjoy the sun. Did I cause the crack because the top was back and the temp was too cold? I was under the impression you could drop the sunrider back without unzipping any soft top windows.

 

I run my sunrider open with the windows on all the time. Not down into the 40s though but I would be surprised if that is why it cracked.