You might try rubbing dry baking soda or slightly moistened baking soda. In that
stage it is a fine abrasive. Dry soda is used by archeology to remove debris
without destroying the bones underneath. They use a variation of an airbrush. Has
a hardened tip so the soda doesn't wear away the head over time.

Toothepaste also works. An electric drill with a rubber eraser installed and
coated with toothpaste can be used to drill a hole in glass.

To finish off the surface a rubsown with jewelers rouge may be in order. Very
similar to automotive rubbing compounds, maybe just a little more fine.

Luck.

John Rodgers
"88 GL Driver

Pat Horrocks wrote:

> Many thanks to Joel, Larry, Tom & Terry for ideas re removing the grey swipe
> (parking lot- Grrr...) on the Tug's burgandy skin.  I should've dealt with it
> immediately (maybe paint thinner would've worked) but didn't.
>
> I'm off to my FLAPS for some rubbing compound (thanks, Sean) or ?.  I'll wait
> to ask a paint shop tomorrow if too risky.
>
> And the challenge continues...
> -Pat