LOL - Touche. But that's not an issue of "arbitrary." I didn't draw an imaginary distinction between one kind of undercoating and another. There are at least three on a MkIII Golf, by the way.
I totally understand that there are always multiple interpretations - that reasonable people may differ - on rules issues but my biggest concern with this on continues to be where the line IS on this one. I think I'm getting my personal definition clarified but that's just me.
I looked and can't find the printed copy of the parts fiche that showed the repair bits we got. I see Dick's concern but I'm not sure what the most reasonable/equitable solution is to this question, short of letting nature take its course and leave it to the whims of the stewards - should it ever come to that.
K