Zenith MJ-1035 panel scratches--can they be removed?; interlock cords

[Jeffhs]

After quite a bit of work, I finally got my Zenith MJ-1035 operating again--not perfectly yet (still some hum, probably filter caps going bad, and it needs a new dial cord), but it works well enough (gets many stations and would sound absolutely great, if not for that hum) that I don't want to do too much with it under the chassis at the moment. However, I now notice that there is a scratch about an inch or two long on the front panel near the stereo indicator (to the right of it), extending to the dial scale for the volume control, as well as several other light (but noticeable) scratches elsewhere on the panel. Is there any way to remove these scratches, say by buffing them out?

BTW, I also had to replace the AC interlock cord when the original cracked near the point where the cord enters the female connector (the one that fits the interlock pins on the chassis), leaving a potentially dangerous bare spot at that point. I am currently using a cord from an old Sony transistor portable; the cord seems to fit the interlock on the Zenith well enough, but I had to make an external FM antenna (from the center conductor of an old video cable my cat chewed up a couple years ago) because the replacement cord does not have a capacity coupler as did the original, to allow the power cord to act as an FM antenna. Are these interlock cords with the coupling device still available? I am reasonably certain the original cord is beyond repair, due to the location of the crack in the insulation.

Thanks in advance.