How to setup the joystick Delta outside of FSUIPC?

[blackbird7 3]

I am in the midst of setting up my yoke and throttle quadrant in P3D v4, and I am trying to do it without the need to purchase FSUIPC 5.  There's a decent chance I'll cave.

FSUIPC 4 has a default Delta value of 256 in the Axis Assignment tab, which I believe reduced my CH throttle quadrant levers from any noticeable jitter.  P3D v4, on the other hand, is picking up the slightest bit joystick jitter as if the Delta was significantly lower.  The in-sim effect is causing my cockpit levers to jitter quite noticeably.  Changing the axis sensitivity in P3D doesn't seem to affect this Delta.

So, my question is how do I adjust the Delta that Prepar3D reads in without needing to install FSUIPC 5?