Bill (Wbill76). I've used the fine tip, which I believe is the beige colored one. In the beginning it didn't seem to be a problem, but after using it a few times they seem to just not give the fine line one would expect to get. I'm using about 20PSI. anything under that and I can't get paint to flow. I'm mixing at about 50/50 enamel and thinner, which seems like it would flow nicely, but then I have the problem of it flowing to nicely, to the point of running out of the tip. I just obtained a second aztec airbrush that is slightly used, and I'm going to try operating with it and see how things go. As to your second question regarding detail of the interior bed, I'll most likely add some misc items, as I plan to attach a PAK40 field gun to the rear of the vehicle just to give it some character. Got to finish my track building first, which as you may have read has me concerned due to a lack of links to make the tracks sag properly. It'll all come around somehow just have to be a little more patient with myself. I'll be throwing somemore pics up in a day or two. It will give a better idea of where I'm at. Just wanted you guys to know that I have been working on my halftrack. "ERIC" caught your response after I had written this , so just wanted to say I'm sure air pressure is one of my problems with detail . We'll see how this other airbrush I picked up for free will workout. That doesn't change a thing though, I'm going for a new airbrush, the "EMPRESS", has already given me the green light. thanks for the feedback guys. Appreciate the interest and the comaraderie. semper fi, mike