Originally Posted by Holliday

I know I had some Metric ones I was going to use first and I would have only needed 3 to make the same thickness as the 4 Standard ones I used. So yes, they come in different thicknesses.

I agree also with having more or less as long as it is close it will be good. If you just put one I could see it sounding like a leak, and if you put 6 or more it might get louder and your tips will start to stick out past the bumper.

I just made a video with my new Sony NEX5. I still don't think the sound is going to be the same as in person though. Enjoy!

YouTube - MAH00251