You HAVE to replace stages already on the roster. For each SSE stage, you have to extract specific files, and re-import them into normal stages. As for what files, I'm sorry, but I have yet to attempt at one that didn't crash.
So, I looked for AGES. Seriously. I've been looking in Brawlbox for hours, with not even so much as a lead.. I checked all of Lucas' files, and even fighter.pac... Where is it? I need to find it so I can(attempt) to display it on Ness as I gave him Lucas' downsmash animation.
I haven't gotten a single replacement attempt to work.. I had a somwhat complete list, everything I cared about anyway. I replace everything the Smashboards thread told me to, an it ALWAYS crashed.
Also, why don't you at least realease what you have, then maybe we can help a bit.
Also, I'm quite sure the value you gave for Falco's laser is wrong. Hex Workshop doesn't find and cases of 830282. There are 3 instances of 830207, and 1 of 83023E.