In the most anticipated dual wrestling meet of the year, the top ranked and defending state champion Luxemburg-Casco Spartans rallied past third ranked Oconto Falls 39-27 on the road to remain unbeaten in the Packerland Conference.   Falls built a 27-13 lead in the heavier weight matches but the Spartans won the last five matches of the night.  Sophomore Cody Demlow and Freshman Eric Peters both had pins that broke a 27-all tie.   L-C has defeated Falls in six straight meets.