I just bought the avistar ARF a couple of weeks ago and I, too, had the same problem. The flat part of the wheel gear, where the linkage hooks up, is off to one side, so when you hook it up, the wheel is turned one way. You have to hook up the wheel, straight, then hook up the rudder. I haven't done this yet and just adjust trim at take off, then readjust when I'm in the air, so the rudder is at neutral. Kind of a pain, but I think it is a manufacturing flaw with the front wheel rod.