Hi,

On this other print which also had the same issue (this was the owl.gcode which can with the printer), you can see the same bulge line on the inside wall of the print as well.

It essentially bulges the same distance in and out. The bulge line is around 1.5mm tall.

1616071596968.jpg

The only think I can think it being is that the print essentially 'slows down' at that height, and lays too much filament down?