got this M80 dual case. I like mono stuff a lot. I was noticing that inside the bag, there are reinforced, checkered parts on the inside of the case, where the tuners and the bridge and knobs are. The surface on this part seems...really rough? I know gold hardware just doesn't last forever, but I'm afraid after just a little bit of use with this bag, these surfaces will eat the finish right off of the tuners and bridge. What do ya'll think?