I did a new CL 600 Renntech edition. Beautiful black car, but whoa, those side quarter roll ups are a biatch to tint. The rear window was cake, as were the fronts. The quarters took me the majority of the time because, even though I have long tools, you just can't physically reach to the point at the rear of the glass. I did flip the lock mechanism on the front doors to trick it into thinking the doors were closed and therefore the windows sealed up, but still. I also taped around the edges because of the felt and fortunately, they came out ok with just a little dirt at the far reaches. I didn't want to use too much water either. Anyone have any secrets to doing these.