Ahhh - I have that one in my to try pile. I am trying to think it I have had that problem with regular Envirotex, or Casting Craft, but can't remember. I know I have not had that problem with ICE resin, or Magic Glos. For the second pour, are you filling to dome, or just filling to cover? Is it warm when you make your pieces too - cold temps can affect the curing and qualities of the resin.
I'm filling to cover. And temperature was like that said in instructions. I think that could be because of mold I'm using.