I dropped a headlight the other day when removing it and shattered the lense, as one does. It wasn't too disastrous as it had a nasty stone chip in it anyway. I got a new one and installed it. I now have a nice, very clear, lense and a rather dirty old lense on the other side. Would it be worth taking the other lense out and giving it a good wash inside and out, or does the dirt bond with the glass after a time. It's not important, just cosmetic. Bill