Have you ever played that hack up to that part? I'm sure the Items does not do anything extraordinary for that part of the stage, I'm spamming save states at that part trying all the Items, but no progress! Although I manage to discover an in-game glitch at the upper right hand corner of that screen. It's like that ladder trick on Megaman I, the screen went up, but dropped back down!
Anyways, I'm playing Rockman dash atm. Next dash+. busy, busy.