First off, I am by means no professional body and paint man but I have done my fair share of both over the past 20+ years. The car I am working on is a 1973 Firebird. I understand how to get nice straight body lines but the problem is the body line in the center of the body is not a crisp line, it's slightly rounded. I have blocked the panels down to the point I actually have a crisp line, but now I need to go back and round it off but I can't for the life of me figure out how to do this with out destroying the nice straight lines I have. I'd GREATLY appreciate some ideas on this.