I agree with the suggestions about the table. You need a sturdier table, or you need to move the machine to the end, over the legs. I have a Brother 1500S, it is a very heavy machine with suction cups on the bottom, and it does fine when it's at home on it's desk. But when I take it on retreats and we're using those cheapo plastic Costco tables with folding legs, it bounces. I always try to set it up over the legs, which does help with support.