I was up half the night refreshing the stats that day. It was a hell of a nail bitter

May I recommend either duck or dolphin

Saw the pics and it honestly looks like over extrusion, especially that top surface

You basically have to retune your profiles to match between the petg and the larger nozzle.

Recommend following this as well as you can: https://ellis3dp.com/Print-Tuning-Guide/

Oh yeah, and you’re going to lose detail with the larger nozzle compared to a 0.4 but it’s a trade-off