I built a building using styrene. Spraypainted it with tamiya paint from a can, and then when I went to glue another piece to it, the paint ran and it would not glue. I used plastructs liquid glue. How come people always suggest painting something before assembly, but when you do, its hard to get it to stay together and you usually end up smearing the paint? I spray automotive primer on everything first, is that ok? I have a airbrush, but when I attempt to spray paint styrene with a polyscale acrylic paint, the paint usually runs. I hardly dilute it with distilled water as recommended. What am I doing wrong?????:curse: