Older TM wear and tear

Originally Posted by Billybgame

As far as the exterior, yeah, they definitely look like marks from "scraping". One is right near the entry door, in kind of a part moon shape, from bottom left to upper right.

We saw the same "moon" shape pattern right behind the entry door, on the back shell. I thought someone had tried to clean the unit, and then did a poor job. I cleaned the TM (it really had serious black streaking), and it cleaned up beautifully, but it is back to the black streaks again after only 5 months. The moon pattern is back. The seal on the left side of the door rubs this area as you close the front shell of the TM. I am going to see if I can keep the door seal cleaner to remedy this problem.

mtnguy

FWIW, after I remove the black streaks, in two trips they are back. I don't think there is anything you can do about it except to keep washing it.