I just noticed the same thing when I put my grp non tuned .21 in my 8ight 1.0 yesterday. I even had ground a bit off the side of the center diff to allow the carb to be straighter and it's still turned too much for my liking.

I did however machine the chassis to clear the 2.0 radio tray so I have that done and the tray installed now. I was hoping using the 2.0 tray would prevent any throttle servo problems and then I read you are killing servos.....

I will post a pic of my engine in a few so you can see the angle I had to set the carb at to clear the center diff.