I used ethanol and elbow grease.? I actually did this accidentally, as I was trying to clean off case foam that had stuck to it. ? It takes a fair amount of rubbing and don't be cheap with the ethanol. ? It does not affect the diagrams underneath.
PS:? I was surprised to see a unit being sold in this condition (without the matte finish).? I figured it would reduce its value or even be a deal breaker, like no one would buy one like this.? I guess the fashion has changed?
Seth Elgart