Kevin I didn't take it at disrespectful. The model that I posted the panel lines are not gone. If you could see it in person you could tell. What I do is before I primer is cut the panel lines a little bit deeper so the clear coat won't fill in.
I strictly use urethanes paints (DuPont) To me they are the better then anything else on the market.
To answer some of your ?'s
#2 Hardener does have a shelf life, I can't tell you how long because where you live your humidity is different then where I live. The only way to make it last longer is to buy a can of Bloxygen. After you open your paint, hardener, & clear coat spray a little then close it.
#4 I mix my paint different then the next person its just a preference, I spray my paint at 15-23 psi.
#5 I use a paasche to an Iwata to sata airbrushes & a sata jet
they make 2 kinds of gauges
1. single- how much pressure is in the take
2. dual- same as above, but with a regulator & gauge so you can reduce the pressure coming out. (I use this one)
Go to your local gas/welding company should fill it less then $10.00
You will also need a coupler on the gauges to hook-up your airbrush to it.
ZTony is right about putting white under red will make it pop. But if you
put a yellow base first it will make the red stand out more then white will.
Anytime I paint anything red I will use a yellow primer and not that buff color primer .
As Geno said Auto Air or PPG?
Auto Air I can't really help you out with. If you are wanting to know about DuPont Cromax I can
help you out with that. I have been using it for the last 4 mths. You can ask here or pm me your ?'s
I can help you out as much as I can.