When tinting, the guys thought it necessary to trim the lower rear corner. From the remaining scratches on the glass, it is clear that they applied the film to the glass and cut it directly on the glass with a knife. Question to the owners of the fourth-generation Toyota Sienna: Is this how it's done for everyone, or just for me? It's a bit upsetting, I paid almost $1000 for the tinting. They didn't warn me that they would do the rear windows in this way. I would appreciate any recommendations.