maybe its because your camera isnt centered to the reticle,
at least for me, i found most of the default camera positions of Aircrafts in dcs a bit headsdown. so i just start my facetrackir, look a bit up to put the HUD in the center, zoom in to check if its in the center, and then zoom out to put my perfect FoV. after that, i press Ralt+0 to save the camera,
re-center the facetrackir and now my zero position will be centered on the hud.
Dont own the ka-50 but if u are willing to try some stuff, go ahead. it may help you!
hope it helps.
(If u fck up your views you can restore them i guess via replacing default files for it.)
now that i think it more, i dont think this will work o.O