Very weird!
Ónly on the Dangerdogz Server? And only when flying Red?
Got to do some thinkin' on this, because, yeah, it's weird!
Now what can be unique to the DD-server, is the wind. It varies in direction and strength (within limits).
But, that could not result in you having to mostly correct the rudder to the right...
Unless... what about your control assignment for Rudder Trim? 109 does not have rudder trim...
What if you have something assigned to it, so rudder trim is always offset to the right?
It should happen also on other online servers, as they all have the same difficulty setting. You may not be troubled by it if 'Torque and Gyro effects' is switched off?
I dunno really...