@Randy Harrison
I am about to get out in the yard to mow right now Randy. It’s in the mid 70’s. I’ll begin with a few suggestions and get back with you.
I practice washing with soapy water the plastic kit pieces I paint. This important step for anything for which you add paint.
I use the flat rattle can paints, the red primer is my first selection. The Rustoleum brand appears to work for me.
Two sprays, one was my first try and I found the second time I do better. And two light applications. Never add the paint too thick onto your subject an don’t be in a hurry 🤨. I always allow 24 hours to dry.
No outside spray while there’s a breeze.
I will answer your specific questions later. I appreciate you asking My opinion Randy😊