<font face="Verdana, Arial, Helvetica, sans-serif" size="2">My itinerary ... showed the ticket as K-class (in this case, a reduced price gov't ticket). Given this, I was assigned to E-.</font>
Kind of an aside to your main point ... when my husband flies on government fares he's always been assigned E+. Even in years when he hasn't has status he's been told government fares make one eligible for E+. Just something you might want to ask about if you're assigned to regular Y in the future.