The first time I installed the rear window it was really tight and I had sliced the seal and it puckered in that area. The new glass came from the same place as the rest of it but can't remember where (they likely all come from the same place). Last week I took it out to replace the seal. 3 separate days my wife and I attempted to install with no luck. I brought over my body man buddy and the 3 of us tried with no luck. We got it close but would never get the lock strip in it was so tight. I took the window down to a glass shop and had them cut me a piece of laminate glass the same, but with a 1/16" off the top. Wifey and I had it installed in 30 minutes. The next day I put in the lock strip which was another 30 minutes. Some of these jobs are very frustrating.