nunchuck sticking

[silk186]

I bought a wii moteplus + nunchuck combo. I'm in China so it may or may not be real. It worked perfectly for the first few weeks. Now the nunchuck will stick in a down position. It started after playing Zelda SS for about an hour and the problem has not really gone away since. Sometimes it starts when I select the save slot, after I open the save or within less than a minute of game play. I also have the same issue in Monster hunter tri. I was trying to read up on this and have tried reinstalling the wiimote drivers, adjusting the IR sensitivity and making sure that the wiimote could see the sensor bar.

[silk186]

How to know if the problem is the software or the hardware? There are not exactly a lot of settings when you use a real wii mote. Also, I keep hearing about bluetooth stacks. I'm using the ASUS USB-BT211. Should I be using different drivers with this?