Out of the blue today, two cracks developed from the top of our starboard window. *cry One grew all the way to the bottom, and they're both all the way through inside to outside. I sealed them temporarily with clear silicone seal and I guess will have to call Catalina for a replacement tomorrow. These have no frames or screws and appear to just be bedded in. Can anyone advise as to the best way to remove the old one and what to bed the new one in with? Thanks!