FUTURE

My . I've never had a problem airbrushing Future straight out of the bottle. As it is an acrylic, I guess you could use a little Distilled Water for thinning. I use a little to flush out the cup on the airbrush and it seems to do a good job. I follow that with some Windex. 

Jim

I also shoot mine uncut. In fact, I just finished spraying a coat 15 min. ago.  I will just brush it on more often than use the airbrush, but this coat was over fresh decals. I use Future to set my decals, so airbrushing a topcoat tends to blend them in more and prevent silvering for me. I've used the airbrush with Future occasionally over a 5 yr period and not had any issues to speak of. HTH.