Wow, four months? That is straight up robbery. I had a cheap one too and the motor lasted maybe six months before it started doing this weird stutter thing, but yours dying that fast is wild. And the fact that it got stuck all the way up is the worst part, now you can't even use it as a normal desk. For almost two hundred bucks you'd think it would at least make it a year. These companies know the motor is the first thing to go and they still slap a 30 day return window on it.