I got it disassembled and pretty much de-cosmolined. However, I'm having trouble disassembling the rear sight. I removed the pivot pin, but can't get it loose. There's a piece of spring steel in there like a Mosin's front sight, so I tried depressing it, but that doesn't work. Any suggestions from you Mauser experts? The stock and handguard are oozing cosmoline and will go back out into the Sun for another day or two. I also found a fair amount of surface rust and would appreciate any solutions for that as well. I figure some oil and fine steel wool should clean it up and since it's covered by the stock and forearm, I figured I could just give it a coat of Oxpho Blue that I have laying around. Or is there a better cold blue for matching the existing blue? The steel that is exposed could use a touch up as well, so I'd like a cold blue that will match the stock blue/black. I'd really appreciate some input on this as well.