(E92) i recently had all my windows done and after a week i had to take mine back as the rear tint (5%) didnt set right - bubbles, lines and gaps between the dots was wide. they replaced it no problem and touch wood it is fine...... It took them 2 hours just to get the back tint right 2nd time round with lots of tutting, head shaking and took 4 people....
well worth doing though!
