Other relevant comments:

• "The cause of the engine out, I think was basically a failure in the ... engine computer software." It didn't seem to be present in any of the other engine computers.
• "The heat shield is looking robust."
• That engine "glitch doesn't seem to be too much of an issue"
• Not many changes between flights 14 and 15 "but some of them take a fair bit of work and we've got to go inside the tank"