Dread... you are THE MAN! As I was doing this project, I kept thinking, "there's no way this is going to get rid of the clickity clackity noise I hear from my dashboard. I followed Dread's instructions (I actually only did the driver side of the cowl as that is where my noise was coming from). After 10 minutes (it was actually a bit tricky until I figured out a nice technique which I will describe later), I got in the car for a test drive convinced that the noise would persist. I was completely shocked when the only thing I heard was the hum of my Speed3 again! I couldn't believe it.
Anyway, here's some more details I can add to Dread's post... I used "127 Linerless Rubber Splice Tape." It's the only thing I could find that fit Dread's description... thick electrical tape. I'm not sure if that's what he used or not. It was pretty difficult getting the tape down in the space you have pried open. I started at the side closest to the driver's door as that was the easiest part to pry open. Lay out the cut piece of tape (sticky side up) on the windshield. If you put the plastic putty knife ON TOP of the tape (but not touching it) you can create the space to tuck the tape in. The nice thing is that this tape wasn't extremely sticky, so it was not too tacky to work with. With a little practice, you'll get the tape in there and you can screw the cowl tight again. I actually did use a blade to cut off the excess as the cowl is not straight, so certain parts had more tape sticking out than others. (I'm curious how you did this Dread... when you put all the tape in there, how did you keep it from bunching up on you?). Anyway, your call if you want to trim it or tuck it all down in there. The bottom line is that if you have a vibrating, clicking, rattle, popping sound coming from the vicinity of your dash or windshield... give Dread's fix a try. Saved me a 90 mile useless trip to my dealership. Thanks, Dread!