I won't argue with Kim Bunker's discussion about using wax to seal
screws, but in Palm Springs, with the elevated (and extremely dry)
temperatures and refrigeration for air conditioning inside the house,
the relative humidity inside becomes extremely low and all wood
furniture dries out and shrinks.  I believe most player units will
become leaky by virtue of this fact alone.

Ray Fairfield

 [ Joints may develop leaks when a mating surface warps from age or
 [ changing relative humidity.  Properly cured and sealed wood should
 [ not warp nor leak.  If the wood is good, what else might cause air
 [ leaks in a dry environment?  Shrunken gaskets?  -- Robbie