Interior Paint

So, I posed a question on an "autobody & paint" forum on FaceBook a while back and I got HAMMERED by most of the members because I'm rattlecan painting all my metal interior parts.
I don't have access to a spray gun set-up, so spray bombing it is. The issue I ran into was after I got my dash frame completed, and it turned out superb, I went to clean off a couple months of garage dust and I used Simple Green... Mistake..!
I learned that the basic matte black paint doesn't hold up well and it changed the finish in areas...blotchy spots.. I then tried the Eastwood DuraSpray 2k matte black and it really didn't come out good. The spray volume was inconsistent and would intermittently "spit"... And that happened with 2 different cans...and yes, I shook the can plenty prior to using..
My question to those that have done their interior metal with spray cans, what paint did you use, and how has it held up. My first attempt that turned out great was done with SEM self etch primer, high build primer and SEM matte black. That was the frame... I was going to do the metal door tops and metal sail panels a satin or semi gloss...or maybe matte with a clear.
Let's hear your good advice ..!!

John