Quite simply when I get a card wrong and assign it a '1' I want it to be boomeranging back at me a few cards later, as it does with ANKI. At present the cards that I get wrong aren't coming back soon enough (less of a boomerang, more of a stick) and I am ploughing forwards whilst too many cards 'fall of the back' of my memory. Could somone tell me how to I set this up?