What about drilling a recessed hole in the hockey pucks and then bolting them to the compressor feet? I would think it would absorb vibrations and help keep the compressor from moving.
That's what I'm thinking 3 hockey pucks and see what that does. Right now it doesnt dance around but I kinda hope pads quiet it down. That and eventually I may do an intake muffler
especially since I was donated a small project and 
