I won't say switching to lacquer based paints will solve your all of dilemma, but it'll be a start. The biggest problem will be color selection, and lately, the auto parts stores have really cut back on the assortment of spray bombs. As I said, I quit using enamels for a few reasons. Enamel never really seems to cure all the way. It may be dry enough to touch without paint transfer to your fingers, but it will stay soft enough to show a fingernail mark in it if you dig it lightly. The last one I painted stayed "tacky" for over 3 weeks, and became a dirt magnet. Lacquer dries really fast, dries hard, and usually has a nice finish before the clear goes on. Just for an experiment, next time try using all lacquer for the whole project and see if there's an improvement.
If you want some really sweet lacquer paints, I recommend the metalcast colors. They can be sprayed over any duplicolor silver or gold flake metallic paint, and they are a candy type paint. The more coats you apply, the darker the color. Up until a month ago, the chain auto parts stores had a rainbow of colors. The local shops have cut back to stocking red, blue and purple now. I have green and orange in these paints and the effects are stunning, especially in the sunlight! They cost a little more than a small can of testors, but these are big cans and can paint a bunch of cars..