This joystick tends to spike a bit on the rudder because the axis is a little towards the left..the plastic handle for the joystick is not well designed on the inside..that is why you see this happening. Raise the deadzone of the rudder to fix this.
Build your own, I worked for Alienware few years ago, on their glory days....Dell bought it and everything changed for bad.
How much is your budget? We can help for sure!