Our dealer fixed ours, under warranty.
We have a 360 with bath and a half, the half is the first vent south of the furnace.
MOST if not all the air was going in the bath...hot, hot, hot.
bedroom and main bath COLD.
All they did was replace the vent with an adjustable one (we keep it almost closed) in the half bath.
And a small piece of metal sticking down in the duct at the bedroom vent which directs some of the air UP before it gets to the rear bath.
2012 Georgetown 360
SHE wanted "a new