It's not quite clear where the abrasions are: on the cork, the graphite, or the hardware for the reel??? If it's the graphite, I'd leave it alone. Cork can take
careful sanding with 220 grit paper (twirl the rod while holding the paper against the cork. If it's the reel hardware, best not too bother.
Changed my mind. If the graphite has superficial scratches that disappear when wet, get some marine varnish. Put a light coating of the varnish on your
thumb and index finger tips. Wipe a thin film onto the scratched section the rod....really light, and probably just one pass. If the milky discoloration from the scratches disappears, mission accomplished. Don't paint the varnish on, and don't go for perfection. Nobody is going to notice your rod's imperfections
from more than a couple feet away, and that's why it was discounted. The rod is not a high-end Winston, and spending any additional money will bring the cost of the rod back up to full retail.