Anyone have a solution to these?

1: Does anyone have a slick way to remove ink pen marks off 21st Century covering without messing up the finnish?

2: Some of the 21st Century covering on a model I have is dull. When I put my oily fingers on it, the covering comes back out, so that tells me all is not lost. I'm thinking mineral oil to restore the sheen. Have you discovered a fix for this problem before.


Thanks Guys.