When Seat 7 raises your completion on 3rd, he's telling you he can beat Kings. You have to consider he has rolled Q's or Aces under. I would probably have popped him back 3rd to find out for sure. Why the sudden swing on 5th to check raise? You had been playing the hand passively until then, and don't improve...I'm lost here. I highly doubt most any opponent would fold to your raise when they have been the one betting out. 6th street seems to be a fairly easy fold. You haven't improved and your opponent keeps pressing, lay it down.

JMO - Knoll