I made a mistake in … I was going to say in my drafting, but the mistake was from lack of drafting. The window opening was 1-1/2″ too low. This, after flashing it all in Blueskin butyl flashing tape – expensive stuff to waste! HFT and I talked about whether to fix it or just live with it. I, in my stubbornness, decided to fix it. Because of the framing style, it wasn’t too difficult to fix. New window opening:
After moving & reinstalling: