Thanks guys and thanks for the advice Airframes. I'll stick with the Aluminum and see how it comes out using your approach.
I finished the prop.
Now for your eagle eyed spotters out there, I have changed the spinner cap colour to natural metal finish using Testors Metalizer. The profiles do have this as yellow, however I have examined many photos (covering at least 12 a/c) of 1140 and other squadron aircraft and all to my eye have natural metal caps.
Decision time, and I went against the published profiles and instructions.
I have strayed away from putting any chipping on the blades for the moment, but have "matted" them after decal application in all areas, but left an area around the info stencils gloss. I've noticed this on some of the photos. Most appear in pretty good nick, so i'll leave it so for the moment.
Cheers and enjoy your weekend!
Ozhawk