Almost finished painting my bike, I got to say that I didn't wash enough the bike and the primer didn't attach well at first. Now, after hand polishing and a few vernish layers, it is becoming nice.
For those who will buy one or haven't yet begun to work on it, I noted a few advices from Nscale.net forums:
I have already washed my FUD parts with acetone, but 27 min is pretty scary.