I'm not quite sure but with dried paint dropping you need to wetsand to smooth it out. Then follow up with compounding/polishing to get it all nice a shiny again.
Check out these articles
http://www.autogeekonline.net/forum/...ory-paint.html
http://www.autogeekonline.net/forum/...mpsanding.html
Other articles by Mike Philips here
http://www.autogeekonline.net/forum/...-phillips.html
There's a wealth of information there but I do not order stuff from there unless they got good BOGO items. Most of their prices are higher or more than the small competitors like ADS, Autoality, and few other. What they do have is a broad range of products.