Got a few of 'em on my new strop a few days ago...but they seem to have stained perminantly. I don't think they'll be an issue when I strop my razor, but thought I'd check here first...

Are water marks detrimental to a strop, and how can I get rid of them?

Found a bit of info from BingoBango (thanks!):
"suggested rubbing a dry pumice stone over the nicked area...This also worked for water spots."
...but this hasn't seemed to work.

Need I be concerned?

Mike