Hey Doug - You perfectly understand my concern, the sheen and color change slightly when I run my finger nail against the finish. Considering that I load my car pretty full when I head to the field, it will probably be wise to protect the finish with a clear coat. Model Masters has a clear flat laquer in a rattle can that is made to go over their enamel paints (most laquers will eat enamel) so I'll probably give this a try. Some people have used the spray can version of Minwax Polycrylic with success, but I'm not sure how well this will bond to the enamel finish; I suspect it will sit on top rather than chemically bond like a laquer will. Thanks,
Steve