I received a "new" boat hull part from a BrickLink purchase that has some rub marks on the smooth side of it that likely occurred during shipping rubbing against other pieces or materials.
Wondering if there's way to get them off. I tried the old saliva on a finger, and then alcohol on a q-tip, to no avail.
You can see the marks on the right side of the upside-down piece here:
Thanks in advance for any suggestions. :)