My 2000 had a messed-up analog for a long time. My original guess was that the conductive silicon pad for the analog stick assembly was dirty or messed up, and when I took it out it was indeed physically messed up, but after ordering a replacement there was no improvement. I even tried replacing the analog stick board itself, but there was still no improvement, so I knew it had to be something else... So I decided to open my PSP and find out once and for all. I found in my case that it's caused by a lack of proper contact between the underside of the motherboard (on the lower-left side of the screen). To test if this will fix your issue, you can just take your faceplate off and press down on the area circled in red while moving the stick to see if this will fix it. I recommend just opening the web browser to test the stick since you can see exactly how it's reacting in there. [*]Take off your PSP's case. [*]Unhook the home bar. [*]Loosen the screen and it's metal case from the system. Some guides have you pry the screen out of it's metal case, don't do that here. [*]Place a few strips of paper where I did (the white in the same section that's circled in red on the upper pic). [*]Re-assemble. If there's dust, go to the next step. [*]Disassemble and clear out the dust, then go back to the previous step. So when you put the PSP back together the strips of paper mean that the screen is pressing down on the motherboard more, which is pressing down on the contacts more! I know you could try to do this from the analog stick side, but it needs to maintain conductivity so you can't pad it with anything non-conductive, and in under to properly get under the analog assembly but still fit stuff in, you'd have to take more than this apart anyways. Tell me if this works for you, please.