[Pulling to the Left/Right]

I'm noticing some pretty strong pulling to the left or right when taxiing and espcially on takeoff roll.  I have verified that it isn't a throttle imbalance.  Any ideas are appreciated 

 

[Sound Volume]

Enjoying this bird so far.  One thing, GPWS callouts seem to be quite quiet.  Can turn up system audio in EFB for slight improvement, but kind of makes other system sounds overhwleming.  Any ideas?