Good fer you! Ya can't undo the rust and pitting , but now ya can enjoy it and won't cry when ya get that first scratch or ding in it.
Didn't catch what ya paid. I'm thinking it should retail about $500. There's a gun dealer I know that does gun shows around my area. Always has nice stuff. He has a 1952 in original box w/tools , comparable condition to my '48 I showed earlier. He's been toting it around for about a year now. He has it tagged at $825. I'm surprised he hasn't sold it. I'm thinking the price and scarcity of .22 ammo is holding it back.
If ya ever come down to SE PA , bring it along and let me know. We'll have a K-22 day!