Find a piece of board for your machine to sit on. You can get an inexpensive piece of 4x4 at a home improvement store and they can cut it to the size you want. I have a piece that I use when I put my 401 down into the well. My other machine sets on top across the whole top. Takes pressure of any excess wait away from the other machine. very little noise no matter how fast I go. It basically needs balance and leveling. the board fixes the problem. You might also find a big cutting board that will work.