I have one of those tables too. None of my machines will fit in it and I haven't been able to figure a secure way to make that happen. I would croak if one fell thru!!!!
I have a husquavarna quilt designer and a old singer sewing cabinet. My husband took out the old machine and installed a lift ,he cut out a really nice piece of wood that fits around my machine just like the plastic cutouts for machines. It works great even my newer machine Topaz fits it.