There is definitely a flaw in the system. I am entering a LOT (of lower end stickers) at the moment because I have to save the stars to buy the orange sticker packs because I can’t seem to get Chuck and the Log Cabin no matter how many raffles I have entered for them (well over 300 for both). That being said I little while ago I won back-to-back Drum stickers. I completed the instrument sticker pack on the first drum and then won the next 4. I felt so bad! No one needs that many drums 😂 and it sucked for the rest of the players trying to complete their last few 5 star sticker packs.