Had similar problems and it related to my well used nozzle, change to a harder type and and better quality, it sure helped. Sometimes those 'zits" can be scraped off with a good quality heavy duty utility knife blade if they are just a few, however it looks like some scaring behind them that is a problem. I used Hatchbox at 220 and bed a 60. I found that the STL's work better for wing components as I could get better quality prints when less parts were printed at a time. I found wing parts best printed in line or 90 degree to face.
My Joker is almost finished I an very impressed with 3d Labprint, thing fit without having to file, cut or say a lot of four letter words. Flew my QTrainer yesterday and very impressed with it. It flew very similar to the Telemaster. Had some problem with landing as every time I came in on the runway it refused to land as it floated off. It has a heck of lift issue and you might think of mixing elevator to throttle. Love my Prusa printer. Anyway hope to get your problem solved and under control, enjoy the learning curve issue.
Had to print at 230 plus and I tend to print at a higher temp anyways but usually around 210 but with these fancy nozzles anything under 230 and they would plug on me.
