Got this brand new yesterday. It’s some kind of particle board. The mar in the corner is totally smooth, feels like maybe paint just separated. The one between the drivers has a slight ridge to it. I don’t hear any ill effects from it. Will it worsen down the road? Put some glue on it? I hesitate to return it for the blowout price I paid to MF. Plus, the packing on this thing was so crappy the replacement would likely be in worse shape. Everything sounds great and I’m loving the amp except for this. Any thoughts? Thanks.