I have a new (.4 hours when I got it) 777 that mowed for 2.5 acers and started to give out a high loud squeak only in forward and reverse. Also smelled hot and was losing power...shut it down and called Deere. They got it on Sat and today said nothing was wrong!!!! My wife could here the noise it was making in the office. Does anyone have any idea what was going on or have you had it happen to you?