The weather broke a bit today and I really wanted to get my second priming test done. This time I tested out the Stewart Systems Ekoprime - first cleaned the parts with their Ekoclean, then etched everything with the Ekoetch and a red scotchbrite pad. Rinsed and let dry while I figured out my spray gun. Just a cheap harbor freight HVLP gun but it should work for what I'll need. The primer sprayed well. The issues I did have were pure operator error and trying to figure out the flow on the new gun. The primers coverage is fantastic and if you keep the coats light it dries in a couple minutes. I tried for two light coats, but it did get a little heavy in places. No runs, just thicker than it needs to be. Also a little bit of trash in the paint. Again that was my fault; after etching and rinsing and drying I was not careful to wipe everything down with a lint free towel or something. Within 20 minutes the parts were dry, and finger print resistant. I did a mild scratch test with my fingernail and it was already more scratch resistant than the self etch was after 2-3 days. Within an hour I was dimpling with no problems. I think this is the way to go. All they offered for the small trial can was the light gray. I really would like to see their chromate green. I'm afraid it will be a little too green though. One thing I noticed is that the primer covers so well that it covers sharpie. I'll have to be careful tracking parts through prep and priming. I also sprayed a test piece with varying levels of surface prep - scotchbrite only, etch only, and full etch plus scotchbrite. The scratch test for the etch plus scotchbrite was definitely the best, but the scotchbrite only is also really good. I definitely plan to do the full mechanical plus acid etch per the directions, but wanted to have a feel for durability if the acid doesn't take. The portion with acid etch and no mechanical etch was fine too, but slightly less resistant to a finger nail scratch. I could easily expose metal on the acid only, versus the other two I could not get to bare metal with my fingernail. I went ahead and order a full quart of green Ekoprime. I hope the color is good. Purchases: Stewart Systems Primer