I took two sets of pop out window frames apart - not one of them simply came apart - they all required that at least one screw be drilled out due to rusting together. They're a weird design and prone to rust due to the way they're constructed. I'm thinking about putting the frames up for sale for a low price of $10/pr and if they don't sell, I'll chuck 'em into the scrap bin. I'm keeping the glass because it is the most valuable part, in my opinion.
There are not enough hours in the day - I need to figure out how to get more done on this car in less time if I'm going to get it back together.