That is something I haven’t thought about, both drops being tilted. That’s why I’m here to get ideas. I’ll look at it from that perspective too, as a little tweak on each might be all I need. Not sure how a mere mortal would check, but perhaps a square would come into play and a good eye for us mere mortals without frame table equipment.
The seatstays did seem to be in alignment as relates to the front triangle however with a couple checks.
Even if both stays were offset to one side, wouldn’t the wheel still be perpendicular to the seat tube but just offset? In my case it is not, and it is easy to see the tilt by eye with no fancy measuring.