I also have the same issues as Landry with Specialtyresin silicon molds specifically!! I have to pour remelts through them as using an oven or microwave to pre heat them is not enough. Doesn’t seem to be as pronounced with other silicon like polytek or alumilite. Molds/masters are clean! Once it breaks in for the day, the baits come out smooth as clean glass, but it’s a grumble to get to it. My guess here is there is some sort of chemical/gas release taking place despite de gassing, unless it’s de gassed a second time right before it goes in. Whatever chemical trace or film is left behind, inhibits the release of the gas. Not really 100 on this because it’s my experience and I don’t have the science to explain it.
It’s a real drag and I just can’t produce efficiently when this happens. So I like the shore 60 idea which I’m going to try before switching out all of my molds
This might be a case of getting what you pay for. A gallon of specialty is way less than a gallon of say polytek.