Alright, I tried printing at 210, but the filament feeder would start to skip, so I brought it back to 220. UM Blue PLA, 50mm/s print, 250mm/s travel, Z hop at 0.075mm with combing on and using the retract while combing plugin for the last few layers. Problem solved, no more scars or other artifacts! You can see some in the middle part, but that's ok, they are in layers before the plugin kicked-in and it will be covered by a cover plate anyway. Thanks for the tips gr5 and Dim3nsioneer! :-P