RE: covering cowling
Take a sample of your covering to a paint store and have a quart of LATEX custom mixed (cost ABOUT $10 ). I use high build auto primer. Spray the latex on (25 - 30 psi will give the best results). Let dry for 7 - 10 days. Clearcoat with "Dupli-Color ACRYLIC engine enamel" (get it at an auto parts house) and let dry about 72 hours.
You will get AN EXACT MATCH to the covering. Latex it easy to use, however it does require a clearcoat.