Hello, 2 days ago I saw blue dust around the models, after speaking with 3ds specialist I purged all the material out of the print head to the point that steam was coming out of the print head instead of material. Yesterday I got worst results, the models were terrible. here is the picture of it. after reading the post I followed DMC advice to test print on paper and here what I got. I checked umbilical fittings, they're tight, PH vacuum is 1.60.