Inexpensive Paint Rehab

Do those sprayers have a tendency to freeze or frost up? I have some in the garage that have a slightly different setup than yours that I had to keep changing out the propellant cans for them to work even half way. They have a paint cup that mounts in front of the propellant can, with the spray button on top of the propellant can. I wasn't impressed with the spray consistency of mine. They tend to sputter a lot. Looks like yours work pretty well though. Great job! I have to admit, I thought you painted the whole car at first! #-o