Mik
It?s not a good idea to use your cooking stove for curing powder paint ? you should buy a cheap toaster oven. Think Columbia Coatings or Pro-Tec has a warning posted on their site about using kitchen stoves.
If you are referring to Quick Coat by Colorite you are using some tough stuff to work with. The color combinations are great and that might be the problem because, of the formulation, the paint tends to clump. That?s when you get bulges, runs, and drips. If you are using standard colors, you might want to reduce your cure temp and increase the time. To apply your paint, you might want to use the makeup/paint brush or the film canister technique ? it gives you a thinner coat.
Try mixing QC with PT clear coat ? don?t know why but it makes the QC easier to work with. Made up some jigs using QC/PT black diamond mix with an overcoat of CC illusions ? very nice effects.
Columbia Coatings has a lot of good info about powder paint formulations and they have a large selection of paint. Pro Tec/Netcraft is probably the easiest (most $) to use.