I've had real difficulty replacing the gel pad that sticks the sensor to the windscreen. Ive tried the m3 pad which I cant sit correctly without causing bubbles (Gone through 5 of these). I then tried an alternative thicker pad from amazon which was easier to apply but have just discovered the gel has come away from the winscreen so wont stay stuck. Has anyone had any success with another product? If so where is it from and how did you apply it?