I think I am starting to see it in my sleep.
This is the example of what I had to deal with :
The funny part is that this kit was fixed up by the workshop before it was recasted (thanks Ila again :D ), so the "original" kit was in even worse condition.
After trying to clean up the ruffles with sand paper for about two hours, I finaly found out a great solution. First I use my dremel to clean up the worse of the stuff and after that use a sanding pads to get rid off the bigger scratches, prime it, and only after that I use sand paper.
Also while I am using dremel, I am adjusting the sculpt in some places.
The first pic is the untouched skirt and the one after is the one I resculpted with my dremel (its the same spot of the skirt :D )
I love my dremel, it saved me so much frustration and sandpaper :D
Too bad it overheats very quickly. After doing half of the skirt, it became so hot that I couldn't hold it :D Oh well, everybody needs a break
I had some of the same problems with the hair (I didn't even started to clean up the single strands of the hair yet >.< )