Man,dont you friggin hate it when that happens /ubbthreads/images/graemlins/flame.gif I don't remember DuPont that well but if the basecoat reducer has a hardner in it it's a guessing game now.I want to say since it didn't coagulate and you didn't notice a difference in spraying it there's a good chance it will eventually set up.If it doesn't continue to set in a week,2 tops,it's screwed-there's nothing for the base catalyst to bind with and it isn't working itself out.