i hate this level..... take out the boomerang brothers asap and just run quickly through the level with as many dupes as you can. the dupe cherries are in the ? boxes except one that is at the end of a row of blue blinky boxes. you can get the stars with 2 then 2 or 3 then 2 again but you need to have 4 halfway through to get the stamp at the top of a 4 person elevator.