Item Block Bug

People keep saying that it is possible to get a Mushroom in first place and its true. The Item you get corresponds to the place your in, or on this game, when you hit the Item Block. If you hit it just before you pass the leader, you might get the following:

Mushroom
Triple Mushroom(Very Rare)
Green Shell
Triple Green Shell(Very Rare)
Red Shell
Triple Red Shell(Very Rare)
Banana
Triple Banana(Often)