I always wondered why they didn't put the flange on both sides 
You'd save the cloth, it would be more ridged, it would be easier to lift and the edge would be radiusd on both sides to lift easier without hitting the balls when tilting.
But what do I know?

You'd save the cloth, it would be more ridged, it would be easier to lift and the edge would be radiusd on both sides to lift easier without hitting the balls when tilting.
But what do I know?