many small pimples / zits on surface
My prints look fairly good but I have seamingly random zits all over the surface. They are good to remove when I scratch my nails over them. I have been looking at the print all day but I can't figure out where they are from,... any ideas?

![Rat Rig Community [Unofficial] banner](https://cdn.discordapp.com/banners/582187371529764864/4ee3e42e227d6aac26f048a3e69d5924.webp?size=480)