First thing I'd do is check the clutch adjustment.  Under the hood,
sitting below the brakes' master cylinder is a rod that runs from the
clutch pedal to the equalizer bar.  The under-hood end of this rod is
threaded.  It goes through a hole in a block that pivots on the end of
the equalizer bar.  There should be a nut on each side of this block.
Reach in there and see if you can jiggle the equalizer bar.  If so,
then back off the lock nut (the one nearest the tip of the rod) and
turn the other nut counter clockwise until you've taken all the slack
out.  Don't go too far.  You don't want to set it too tight, or the
throwout bearing will be constantly pressing on the pressure plate and
will burn out.  Tighten the lock nut, and see if your gear selection
problem is gone.  If it's not, and you've run out of adjustment on the
rod, then it's probably time for a new clutch.

The  scraping sound is the throwout bearing.  If this sound doesn't go
away after the clutch adjustment, it's time to replace the throwout
bearing.  Because this requires removal of the drive shaft, shifter,
tranny, and bell housing, you ought to replace the clutch as long as
you're in there.  A cheapie clutch kit, including a new throwout
bearing, runs about $180.  The good stuff -- Centerforce -- is about a
hundred more.

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