I have two 1001 PSPs both running Gen-D3 Prom-4. And both PSPs have a problem with the analog stick constantly drifting downwards. I tried buying a new joystick, cleaning the contacts, cleaning that clear gel and contacts under it, and also twirling the analog stick when on the System Information screen to calibrate it. After all this, they both still keep slowly drifting downwards... Any more suggestions on what i can do?!?