Takes a while to compress the foam to match the body shape. It is tight for a reason. If you keep your guitar in its case like you are supposed to it will eventually fit perfectly. But if you leave it out, on a stand or hanging on a wall, it will always be tight. It will also affect how it plays. Worst thing you can do to a guitar is hang it on the wall, and just leave it there. Put it to bed when your done with it.