I know which section your talking about and I already got that one, However I did beat the game so I'm not sure if I can still get this one. It's basicly a Huge room that enter at the top left and have to shinespark Horizontally to get into, you crush about 10 lines of vertical Sparkshine squares, then on the lower part of the room there is a box on the left side with shinespark roof, along the right side there is only one row of shinespark blocks to a platform with a diagonal slope in the middle. Below this there is just a nice flat ground that I've run and shinesparked a hundered times and come no closer to figuring out how to get the pb Pack hiding in the box that's on the lower left of the room.
Now that I have accepted you Lord, You will remember my sins Nevermore