Window upgrade

Our house, family built, in 1975 had 19 windows and a sliding door made with the brown aluminum frames. These frames were great in the fact that they never rotted like the old wooden frames however they do pass the cold too easily. Half the windows were double pane and most leaked so there ends up water vapor blocking a clear window. So I have over time replaced the leaky ones with the new vinal Milgard Windows. Today was the day for the top floor's 8-foot wide window. I seem to do it differently each time, unfortunately. (Slow learner, I know.) What follows is a picture sequence of today's work after I removed the glass panels. I have this feeling the frame will not be used again but it will get recycled for aluminum. Thanks, Don for the help with installing the new window.