I spent yesterday wailing and gnashing my teeth trying to get Tru Color to behave properly. Fail. I don't want to sound like a Negative Nellie, but I'm tired of fighting a losing battle. That being said, let me share some thoughts.
Xylene works as a thinner. I had hit and miss results with Acetone.
It seems the moon has something to do with how the paint goes through an airbrush. Sometimes it spits and comes out in little chunks. I don't know why this happens, even with their thinner. But to get it to flow right, I've found that I have to thin it so much that it takes the whole bottle to get half way coverage on a project. Total waste of money and time. Thank goodness the air is free.
Sometimes the sheen is shiny, sometimes it's acceptable. Maddening.
Yesterday, I was working on an S-scale wooden depot for a friend. I sealed the walls so that it wouldn't take multiple bottles just to get a decent coat of paint. The thing looked more like stucco after trying Tru Color Buff. No matter what the p.s.i. was set at, I couldn't get good results. Since the company is in my state, I'm going to go down there and sit in the lobby until they show me their paint works.
I picked up some Scalecoat II at Caboose Hobbies last summer. Wasn't thrilled with the results of that either.
"Floquil, why have you forsaken me?!?!"