OK, I'M ON HOUR 2 OF TRYING TO HIT THIS DARN SWITCH. I'm at the part where you go down the green tube and you find the blue invisible switch where it's suppose to release another tube. I have in 3d mode, 2d mode done every possible jump, jump with a throw, I've tried both players, but the switch isn't being activated. I would SO appreciate any advice on what I'm doing wrong. Thanks everyone.