I will be receiving a Zastava M70 (32 ACP) soon from RGuns. It's going to come with a liberal batch of cosmoline because it is "new old stock" having been unissued and stored for several years. I figured for $225 it could be a good deal. Viewing some reviews on YouTube one of the first things that had to be done was to deal with the cosmoline issue. Has anyone dealt with this? Suggestions?