I checked config files carefully, but I could not find the parameter for that.
(There was one in 'Config\cockpit.cfg' in V1.02.)
Maybe they removed it.
I assume you are talking abaut new Vector function.
I can't confirm this because I don't have Vector, but this could be the solution.
(It works for analog axis zoom control.)
Open \Lock On 1.1 Demo\Config\View\View.lua with Notepad.
Find these lines.
-- Camera view angle limits {view angle min, view angle max}.
CameraViewAngleLimits = {}
CameraViewAngleLimits[PlaneIndex.iSu_27] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iSu_33] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iSu_25] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iSu_39] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iMiG_29] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iMiG_29K] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iA_10] = {20.0, 120.0}
CameraViewAngleLimits[PlaneIndex.iF_15] = {20.0, 120.0}
The average value of 'view angle min' and 'view angle max' is the center value for analog axis cotrol. In this case the center is 70 degree.
Change values in the line of the aircraft you like.
If you want to make Su-25's center value 90 degree, you can try this.
CameraViewAngleLimits[PlaneIndex.iSu_25] = {20.0, 160.0}
or
CameraViewAngleLimits[PlaneIndex.iSu_25] = {40.0, 140.0}
etc.
Save the file and fly to see what happens.
I hope this works.