For years i always had a slight left yaw issue. I would have the rudder trim full and it would help just a bit. I just got used to pressing on the right pedal and mastered a way of wedging my foot just a bit to help not tire from the continuous pressure. Never enjoyed this but its just one of those things that i let be for waaaaaaay too long. Then the thought of the nose fairing being the issue was a lightbulb moment but again i let this be just a thought for more years... Finally, just this year i removed the wheel fairing and went for a flight.. Hallelujah !! Tracked straight !!! I was so used to pressing slight right rudder i was actually inducing a right yaw lol
So now it was confirmed its the nose fairing - how was i to fix that (no idea up to this day) However, installed the fairing back on, and i dunno what the heck happened but the aircraft still tracks straight - well, most of the time. Its one of those quirky aircraft things that if i have slight left yaw, i nudge the rudder just a bit off to the right and then let it settle. Sometimes it has slight right yaw and i nudge the rudder to the left, and let it settle in the middle - I am just concluding the fairing is catching the airstream in either a left or right yaw and i have to force it into that sweet spot. Weird !! but works thus far.