when i was doing the body/bondo work on my truck in 1989 we had a cold spell and the bondo wasn't setting up as fast as i wanted so i added some extra hardener to speed up the hardening. Those spots that i used extra hardener on started cracking and coming loose in as little as 5 years. those spots that i followed directions on the bondo is still as attached as the day i applied it. sometimes it just pays to follow directions to the letter.
