A friend...didnt use gun with agitated pot as use a gravity fed bored out aerometal unit, flake seems to stay nicely suspended with the agitation of gun movement. Also the flake was added to 3 gun loads of clear, so any density differences in flake are lost with the approx 4 lightish coats over the car.
Have tried using sunction fed gun before for flake and it tends to sink to the bottom, so gravity fed seems to definately be the way.
I also use a duster that I made out of a degreasing gun (new one!!) for doing really large flakes, basically you lay a 2k clear of the car so sticky, then load the duster with the flake dry and then blow the flake onto the tacky lacquer, then clear coat to death!!This makes larger flakes lay better, in solution they can lay upright and even 5 litres of clear wont bury them! Works great on roofs too, as you can apply into the air over the roof and let the flakes fall and settle themselves....works a treat and cost less than a tenner!!
Nice gun the Devilbiss JGA gyspy, not sure about celly set up though...far too much hassle to get a nice finish for me..2k rocks..dust coat,heavy one and wet one (a bit more thinner) and jobs a good un...no flatting, mopping, just cook it up, unmask, and its done and shiny! Celly is good for classics though...they wouldnt look right in 2k or base n 2k clear.
Laters
Gregster