I need a small adjustment on a GIMP file I have. I've created a multi-layer flyer on GIMP Version 2.6.11. Everything looks centered and from what I can see, all dimensions indicate everything is centered. When I print the item the left margin is wider than the right one. Can't figure it out. I'm definitely a tinkering amateur and I've hit a wall. I'm hoping to talk to someone that can walk me through what I did wrong and possibly give some advice on making fliers in the future. HELP!!