I am working on it, I fixed the yoke in the object file (so it now works right in 2D), I just have to fix the vrconfig. Problem is, I started a new job this week and have zero free time now.
If you want to do the first part of the fix, it's this line, put the missing minus sign on the second 500.00...:
ATTR_manip_drag_xy four_arrows 500.000000 -500.000000 -1.000000 1.000000 -1.000000 1.000000 sim/cockpit2/controls/yoke_roll_ratio sim/cockpit2/controls/yoke_pitch_ratio
I will have a look at the vrconfig when I have time.