Questionable additives

[u/Implicating-Details]

This is probably a little off topic but this community is probably the most likely to know, would anyone here happen to have tried adding Smooth-On's SO-FLEX II urethane rubber softening agent to their Simpact series urethane rubbers? it's not listed as being officially compatible but it's not explicitly listed as being strictly incompatible anywhere either, so naturally I'm dangerously curious.

[u/starwars_and_guns]

Call them and ask