I've taken out the proper screw in the bottom tang, and short of forgetting about another, I can't seem to get the stock to budge. I suspect there might be a bit of corrosion between the upper and lower tangs that is tying it up, based on a small amount of rust I've cleaned out of the receiver. That's the main reason I want to take the stock off; to check for any other possible rust.
Is there just something really simple I'm missing here? Shouldn't it slide right off, with maybe a small amount of drag?
I don't want to force it, and end up breaking a big chunk out of the wrist. I'm absolutely lost on how to proceed.

