If they are the open backed metal stands add stick-on footers in a 3-point configuration (2 in the back and 1 in the middle of the front cross brace).
They sell little rubber stick-on footers @ hardware stores and online.
Whatever the stands are like 3-point/tripod support should help stabilize them.
DeKay
They sell little rubber stick-on footers @ hardware stores and online.
Whatever the stands are like 3-point/tripod support should help stabilize them.
DeKay