so you burned with a pioneer, and thats it?
actually no. the pioneer backups would not work, used hlds and tsst drives.
on PaPo's note i have to agree, pot tweaking is a very bad idea, where i work i have seen litterally 100's of PS2's that have died from this very act, and dont say its just because its a PS2, a laser is a laser no matter what device its in, the dynamics dont change just because person a makes this one and person b makes the other one. lasers are tuned at the factory to work at their peak, and when you tweak the pot it starts working at an altered frequency...
on this note, if you have bricked your drive how much do you want for the remains of your console and drive.