Yes, well, whilst pondering your presumption, did you consider who much it costs (both in terms of direct costs, as well as lost revenue) to take such an expensive asset out of service to fix a relatively minor problem. Its not like a car where you can pop down the local shop and have the mechanic look at it.

Just use the blankets they give you and stop moaning, I'm sure its on the tech log, and will get fixed in due course.