when I bought the Z a couple months ago it looked great, the dealer made a good job on the shine.... well, a good job on filling

It was only when I got home and stripped it with some dish soap to see the naked paint that I could see the wash marks. lots of fine swirls, nothing out of the ordinary and prob put in by past owner washing and drying. I've machined a few panels and going to get time to do the whole car before spring kicks in but its really only when you strip the paint of all filler waxes and have the sun glaring down on it that you see the paint condition. A fully corrected paint job may seem a tad overkill but it actually saves money and time in the future. A well corrected car only needs a wash and a quick wax top up for protection afterwards and your back to perfect and will stay that way unless you wash and dry badly