I have run into a strange problem recently in that when spraying top coats (clears, candies) with my pro gun. I’ve been getting tiny clumps of powder, about the size of a pinhead coming out of the gun. When experiencing this, I tried sifting the powder multiple times to eliminate that possibility but still with the same results. Finally during one episode of this, I transfered the powder over to my hobby gun, and no clumps :confused: . Put the same powder back in the progun and what do ya know? clumps! They are small enough most of the time, they will blend in with the overall coat by the time you get your final thickness, but I have had a couple of redos because of it showing up in candy coats. Very frustrating until I find the source of the problem. Any ideas?? Anyone else experienced this?