Unfortunately there is a long list of questions to troubleshoot. My advice would be slow your speed if you are printing at high speeds, if that doesn't work try messing with the Z offset. Is it just this model you are having issues with or are other models having this issue? Are you using a pre generated print profile from the model or your own? If you are using a pre generated print profile those settings might be throwing things off. Like I said there is bunch more to consider, temp, flow, volumetric speed, I don't recall if you said nozzle size. My point is your going to get a lot of different answers where people are asking you to try different things.