Hi folks, today I booked a flight from SEA-DTW-AMS-DTW-SEA and the return flight is on KLM8617 a 747. (NW codeshare) After booking, I called and asked for exit row seating and the Elite agent said they cant assign exit rows on KLM. Is this true? Is there a workaround or did I just get a unwilling agent? No problem on the NW flights though. Any help would be appreciated. An 8 hour flight stuck in a "regular" coach seat will kill me.

Thanks!