: System 3 205 hardner versus 207 hardner. Have people had good results using
: 205 hardner instead of the recommended 207 clear coat hardner? My working
: environment doesn't accomodate the minimum 60F cure temp. until well into
: the summer months.

While some people have had good results with 205, other people have had severe clouding. I'm sure there are things you can do to minimize the risk, but I can only guess at what they are. Talk to the people at Gougeon Brothers. They are very helpful.