So I got a bunch of Andersen windows I will be installing. They are gliding (sliding) windows with a real wood interior. I want to stain and finish them to match the trim that's going to go up around them (dark wood, craftsman style). It looks like if I wait and finish them after being installed, it will be hard to get to all the edges of the wood parts. Even worse, stuff might drip down to the track area affecting performance. I'm thinking if I lay them flat, and stain and finish them before installing them, it will be easier to get to all the parts and I won't have to worry about dripping so much. Also the way these are constructed, it's two sliding panes that will both move when unlocked, so I will be able to slide the back pane under the front pane, and reach both sides of it unobstructed. Also the way these windows are constructed, the wood trim that's installed later will not really even touch any of the wood in the windows, there's a grey aluminum frame that runs around the outside edge. Not a big deal, I think it will look fine when installed, just saying the wood on the windows will not even really touch the trim, no reason to finish everything at once. Thoughts on this? I can post some pictures if anyone is interested in seeing the details. Thanks!!