Maaan, I don't know how I missed this but a year out after buying my used "mint" JP-2C I was moving it around, and wound up staring point blank at the control panel. Realized that for just about every knob, there is a markered up dot. Was curious if there's anything I could use to strip the marker and the white-out (presumably) dot underneath without taking off the panel letter? Just in general I find it asinine that people do this stuff. You found the one good configuration of the amp? The one good sound, better mark it? It's a MIDI amp - save that shit to MIDI! Or take a photo of it with your phone. Or get some stickers. Or pen & paper. FFS.