I'm having some issues with a Royal brand easel. The easel seems to be a standard 2 blade type. In other words 2 blades are adjustable and 2 sides of the easel are fixed. The fixed sides are bevelled. When I put paper under the easel, the blades lie flat but the fixed sides don't lie flat (they sit a mm or two above the paper) and light gets underneath when exposing the paper, ruining the border. Has anyone used these Royal brand easels? Is there a DIY fix to this issue? Should I just shell out the bucks for a premium easel?