Your outfeed table is set slightly too low. Unplug the machine take a
good quality straight edge, find top dead center and adjust the outfeed
up until there is no gap between the straight edge and the table and
the straight edge barely touches the blade. Alternatively adjust the
outfeed table up 1 thousandth of an inch at a time until you get rid of
the snipe. Recheck your board to make sure it is coming out flat, if
you get the outfeed table too high you will get a crown in the side of
the board that is being jointed. So to recap crown = outfeed too high.
Snipe = outfeed too low. Another thing that helped me is that if you
are careful you can hear and feel the snipe. Adjust the table up until
you can't hear or feel the snipe then check to make sure you don't
have any crown. Good luck it's usually not as hard as it sounds to
fix. Happy sawdust, BC