Not My Words, Not Claiming Any Greatness For This But I Followed These Steps And It Runs Flawlessley!
Make Sure You Have Wiikey update 1.9g, The Mario Update
0. Update Wii to latest version through online.
1. Patch the ISO with RegionFrii.
2. Burn the ISO at 2x with IMGBurn and verify turned on.
3. Patch the SAME ISO with Brickblocker (so now it's RegionFriied AND Brickblocked)
4. Burn the second ISO at 2x with IMGBurn and verify turned on.
5. Pop in the first burned disc.
6. Update to ~10-15%, pull the plug.
7. Pop in the second burned disc.
8. Works perfectly.
9. Throw away first disc, it's useless now.
Sorry To The Original Poster FOr Not Quoting it from you, just a copy and paste
Dvd 5 is a single layer 4.6gb version with movies removed causing crashing in some of the game, but vs mode and event modes work fine as far as i can tell!
dvd 9 is the dual layer thats yet to be posted(to my knowledge) and will have the movies etc, but as of yet will not work on wiikey, but it is being worked on by team wiikey.
Thats about all i know, hope it helped, if so