defining terms will help.  Wow and flutter are basically speed variation problems in a turntable, and are different than feedback (which is basically when output gets fed back into input, such as when a speaker is too close to a microphone, or a turntable).  Speakers cause loud vibrations (music!) so if the turntable is just a couple feet away, it's probably too close.  Move it farther away. The turntable should be on a sturdy support, and it may help to have its feet on some absorbent material too.  I don't know anything about the Pioneer, but it may be more susceptible to vibration than your B&O.

And also - yes replace the stylus if it's bent.