when I bought my scroll saw, the first thing I did was to throw away the stand through lack of room in my workshop. the net result was that it leapt about all over the bench at the higher speeds, so I bolted it securely to the bench and added another bed by bolting a 1/2" peice of ply to the metal bed, these two actions tamed the machine down and it now behaves perfectly without vibration.
Hope this helps, iggygiles