Its an UM1.
The settings that Ive found usually works for me with PLA has been 210C, but when this happened I tried changing to 230C, but it didnt work. It is possible that its the fan, but the problem area wasnt on the right or left side, but rather towards the back/middle of the model.
I have a suspicion that it could have something to do with the nozzle, Ill get new ones tomorrow, so Ill try that. And also Ive heard that sewing machine oil in the filament tube could help.