I sprayed Organosol 23 years ago and never had a problem with upkeep. But, I did have a problem spraying it. It came out of the gun like cotton candy and laid down like it as well. I sprayed several layers, hoping it would liquify and spread - it never did. After it cured,I knocked it down with 3M’s Scotch-Brite pads and then rubbed reducer over it to remove the gray and bring it back to black.