Hello all. I am very mixed up on what to do about the mappings for Sonic 2 SMS. Whenever I mess with them in Aspect Edit, they turn into a garbled mess. I heard Aspect Edit saves them with the wrong file extension, and so I have to change it in Notepad++. If this is true, what is the extension I need to change it to? (.bin,.asm, et cetera). Is there something better to use that will give me less issues?