First, sorry if I posted this in the wrong section.

Now the question. My wife`s VW Rabbit has a couple of scratches that are be yond clear coat surface damage as far as I can tell. When cleaned and I rub my finger over it it is noticable. When I run my nail along it, it clearly catches.

I was going to attempt to wetsand it even with the rest, however I`m sure if that is the proper procedure. I`m worried that the scratch is so deep that the panel will need a repaint regardless. Alternately, I could attempt to at least smooth the scratch out with either:

a.) wet sanding + M105
b.) just M105 (maybe a couple full passes)

Any suggestions on this one? Or any other methods to test paint thickness in the area. I`ve looked at paint meters and they are very expensive, unless I`m looking at the wrong units.

Nick