since i now have both the 2.4ghz spectrum 3-in-1 cx2, and an old 72mhz 4-in-1 cx, i can totally say my 3-in-1 cx2 had a right-yaw-bias out of the box - dunno if its the spectrum or the 'out of the box' cnc upper shaft top, though - i suspect spectrum/3-in-1 interface issues or perhaps spectrum controller issues - the 4-in-1 72mhz is rock solid except for the odd twitch now and then and that is expected with 72 mhz

edge