Please tell me two things.
What area you're in and all your SS items.
I am in 7-4 and my SS items are: Face paint (Chuck), Poker cards (Blues), Gold Kaijuu hat (Bomb), Laser Saber (Bomb) and Cleotropa Stick (Matilda).
All of them are 2 stars except Face paint which is 3 stars (It was the first SS item I got after all).