scuff

SOLD Selling my used Puig Double Bubble Smoke windscreen for 2004-2006 model. It has a couple of scuffs - most notably a scratch on the outside and a circular scuff from ez-pass holder suction cup (apparently they make them so tough). It's not easy to see in the pic, but the circular scuff is...

My front discs are a bit glazed, affecting braking. Pads and discs still have plenty of meat on them so I'd like to save them if I can - is this possible? My inclination is to scuff the discs and pads with some 800grit wet and dry, lube up the calipers and see what happens - feedback...