Hello, I have an ultimaker 2+ and am having some issues using the nozzles with a diameter less that 0.6mm. I have used the atomic method to clear the nozzle, but a lot of plastic accumulates around the nozzle head during the print and ends up messing up the print. Does anybody have any advice on how I can avoid this from happening? As it stands the 0.4 and 0.25 nozzles are pretty much unusable. Cheers.