Remember when we thought internet was cheating at trivia?

Same reason my grandma's recipe card beats any cooking app.

How much material are you actually removing on that final pass with the trim router? Like are we talking a full 1/4 inch groove in one shot or are you stepping it down? I run shaker doors too and the bogging usually comes down to bit size and how deep you're going, not just the router itself. A small router with a sharp 1/4 inch upcut spiral and three shallow passes can handle oak ply better than one heavy cut on a big router. But if you're doing a stacked set all day, the arm fatigue thing is real and the big base does help with tipping on those narrow rails. So are you stepping down your passes or trying to hog it out?