To Jayson,
I also had touchscreen problem for a while. Not exactly inverted, just off 3cm downwards between my finger and the indicated point at the screen. Again, the solution is to update to latest Windows Update and then restart. Dont forget to restart. After update and restart, my teclast back to normal. About the stylus, I think for every tablet there needs to be a compatible stylus. I’m planning to get one for my teclast form my dealer. I’ll get back to you as soon as my dealer find a compatible stylus. If you find it first, let me know 🙂