Here's a hard learned tip: If you find that you need to turn the idle screw all the way in or close to all the way in, you have an air leak. Get it off the road asap! and find/fix it, or you'll cook the piston and destroy it, and the jug.
This may absorb the vibration that creates noise, but you will probably not get the cooling that is needed in the hot summers of where you live. I would not use this idea in the summer.