I know mate. At the point of reading your original post I was in the dark, then after scrolling down and reading Porker's post I was like, "ahhhhhhh". The penny dropped eventually.
The devil's in the detail.
All part of my PUK learning experience. I'm in two minds about what to do with my centre caps... buy 'em OR paint and lacquer the ones I have when I do the refurb, including stencilling red H's?