Disc Reading Error. How to fix.

Hi, I am new here. I remember installing homebrew and gecko OS 1.9.2 a while ago but I forgot everything about it and how it works. Ok here is some history about my wii

It is a Japanese Wii but I have used the any region changer to change to United states.

Now it is on Version 4.1u

Problems:
1) Can never load any games from the main channel. Have to run Homebrew => Gecko Os to play games
2) Never reads disc on main screen.
3) Downloaded Wii Sport Resorts and I get a message "Error #001 unauthorized device has been detected"

Questions:
1) Since my wii is NTSC (i think please confirm) can I still play pal games?
2) How do I fix the disc reading problem?
3) Should I update my wii?
4) Is there another better program that everyone uses similar to Gecko to boot up games?
5) Next time I download games should I download PAL or NTSC

dunno if it'll help but i use "gamma 0.3 with 002 fix" to load most games, and it never askes for an update
i hope it helps