It was tricky to get inserted because it's SO soft. (I'm a former Diva Large user) I use a C-fold, but am finding this won't work with this soft of a cup? And I can't imagine the 7-fold, S-fold or Punchdown would work either? (Just because the softer cups are a little tricky to get to pop open). So, what's worked for other Sckoon users? Which folds are best with a Sckoon?