Fairig problem

[Beach]

OK...probably did it wrong...

Its been 18 hours since I applied fairing compound made of System III medium cure epoxy and 410 fairing compound filler...thiking I knew what I was doing I mixed the filler and the resin together first and then I added the hardener and mixed pretty dam good...maybe not enough...been 18+ hours and its still soft enough that I can dent it with a fingernail...some thinner sections are hard...Reading the instructions it says to mix both parts of resin BEFORE adding the filler...maybe this is the problem...or is the weather...cool and 50-65 degrees and humid...

Should I wait a few more hours and see if it cures or go ahead adn pressure wash most of it off and sand the rest off and start over?

I used the Syatem III and have been real happy with it so far...dont have a source for quick fair here or I would have used it...needed an epoxy fairing compoud cause I'm going over old gel coat and onto new epoxy and glass transom...any help is appreciated...

Beach