I've been playing with Duracoat for a while now and found that surface prep is the most important step in the process. Duracoat loves to stick to parkerized and oxide finishes. I've been doing a light sanding with 600 grit sandpaper followed by a thorough wipe down with acetone or MEK. I use compressed air to completely dry the part. If you are refinishing a pre-painted, chromed or previously coated part I recommend media blasting rather than sanding to get a good surface to stick to. After the cleaning process it's important not to touch the part with your bare hands as this can transfer skin oils back onto the part. Unless you are using Durabake, Duracoat is air dry so no oven is required. I've had very good luck with Duracoat and Duraheat, both are air dry products. Have fun!!
Marty