There's more direct things to do...
The games you mention all have something special.
-Monster Hunter 3 is in the same class as the guitar hero/rock band games. It only works on a cIOS that's based on 37 (either one of Hermes's cIOS'es or rev19 or 20 with a base IOS of 37).
-Wii sport resort has an alternative dol. You must set it to use that alt. dol, watch the "how to use the wiimote plus" movie, quit the game, and then tell it not to use the alt dol.
-red steel 2...I know it has something similar as WSR, but I don't know the details.
All in all, there are some games that rely on certain settings (error 002 fix, alt dols, force region settings, certain base IOS'es...things like that). Make sure you've got an USB loader that allows to properly change these settings, and don't assume a game doesn't work if you haven't tried fiddling with those settings (or do a search about them).