Yes, yes yes! Square up those tops! One time I over pressed a top, even after I had squared the top and wouldn'tcha know it... the quilting police called me on it. The top ended up not quite square and the edges were wavy. We had to ease and gather up the edges to square the top up again, before it was machine quilted and it still ended up with a couple of minor puckers and bubbles near the binding edge.
She was right. Sometimes it pays to listen to the law.
~ Cindy