ORIGINAL: opjose
The BEST thing they do, which I wish others would also, is to supply the clear cowl "template" for you to use to figure out where you will be putting holes or cutouts in.
Good point, I forgot about that. Even if you make a mistake on the clear dummy cowl, you can just tape it up and try again until it's just right. It sure beats ruining the nice fiberglass cowl then having to order a new one.
The WM Rambler 45 is probably one of my favorite planes by the way. The pictures on their web site look goofy but the plane is much nicer in real life plus the flight characteristics are excellent.