Alpha, he already said he's in Malaysia. NGKGTATT is there anything I can call you that's easier to type?
If you take the back off and hold the TX carefully in your lap you can carefully reach underneath and move the joystick that works the way it should. Watch closely to see what everything does and if the bad joystick acts the same way. Remember that the two joysticks (gimbals) are the same, but one of them is upside down, backwards, whatever you want to call it, basically a mirror image. Look for any springs or moving parts that aren't acting the same on both gimbals. If you can identify the hang-up or broken part you're halfway home and then you just have to fix it. If you absolutely can't find one anywhere else I have one I'll give you for free, but you'll have to pay the shipping and I have no idea how much that would be, but I'll bet it's a lot. If you think it will help I'll make you a video showing how to check these things.
When FDR coined the phrase "The Arsenal of Democracy", he was talking about Detroit. Proud to live in the 2nd most violent city in America!!