I didn't manage to fine tune manipulators (i needed MCP rotaries the most, but all of the them are drag_XY type).
However for the ones who like to have normal default seating position in VR I would recommend to create B733_vrconfig.txt file in the aircraft folder with the following content:
A
1100
VRCONFIG
################################
#TELEPORT HOTSPOTS
################################
BEGIN_TELEPORT_HOTSPOT SITTING Pilot's Seat
AABB -1.5 0.0 -17.0 0.0 2.0 -10.3
PRESET_XYZ -0.512 1.59 -12.8
PRESET_PSI 0.0
PRESET_THE 0.0
PRESET_PHI 0.0
END_TELEPORT_HOTSPOT
So you will no longer find yourself right and behind the proper pilot position in VR.
Most probably I will not experiment further with this file so I hope VR ready IXEG release will be coming soon
EDIT: After some time I figured out that I sit too high. I corrected position for height from 1.69 to 1.59 for more realistic view.