Have also noticed the UD bounce, and always take a window seat on UD...shame for Mr Heckenhocker on our last trip who insisted that next to me would be nicer than a row in front/behind...in fact he said that with the interrupted sleep, he might as well have been in Y.
So for our YVR (redemption) trip I told him it was Y for him....he has revised his opinion and conceded it was not THAT bad. Haven't got round to telling him CW is full and we're in F. Yes, I'm evil.

I can only be controlled with adequate supplies of Fruit & Nut.