i sanded down my old hunting truck and bought some duplicolor primer to run through my spray gun. the stuff I got did not need reducer. i wanted to add another coat so i bought some more to finish. turns out this **** did need reducer. i don't know nothing about paint so i just kept spraying lol. i later read the new can and it said to add reducer. can i simply scuff up the primer without reducer and respray or do i need to take it all the way off. thanks for your help.