hello - i'm a member of a few forums & on another one i go to (nesworld.com) there is a thread basically saying the DP guide is incorrect. i dont know which version of the guide they are talking about but thought the number crunchers here at DP would like to take a look to either straighten it out or to make a note for future guides. the thread is located here:
four warp whistles SMB 3?
p.s. another thing they talk about is a variant of the SMB 3 cart.