A little comparison, the red model is the original one I printed out a year ago.
I shifted the nozzles so that they were in the center of the nozzle.
I made the walls thicker
I made holes for thermal inserts
Redesigned the planes for fans
I drew from scratch and took the source code only to check the dimensions.
The author remixed this model.
I changed the thickness of the walls, the adjacent planes for fans, nozzle separators and all for thermal bushings.