I wouldn't touch the pots for optical laser power and tracking as a last resort if you can't fix it via anything else.
A draw sticking problem could be a problem with the limiter/latch switch underneath the draw or an over-greased or under-greased gear/belt that is causing slippage when the draw motor kicks in to open the draw. This problem can also cause tracking issues (random skipping on a track of a cd) if the draw is not closed or opened properly, a miss-alignment in the laser head to read from the tracking of the disc.