I am trying to figure out what is causing this. I have cleaned my gun and my oven. My prep consists of sandblasting the part, lightly sand it with 400 grit sandpaper, wipe it down with a rag lightly sprayed with PRE, and have even tried wiping off the parts with a tack cloth. I have tried leaving out the PRE and it didn’t make any difference. It looks worse when I use gloss black. If I look close, I can see some of the smaller specs when I use semi gloss, but it is not that bad. I don’t know if it is because of the powder, or if it is just a lot less noticeable in the semi gloss. I used to get perfect results.