Hey everyone, apologies for grave digging but I think I've figured it out for 2.7
\Eagle Dynamics\DCS World\Mods\aircraft\Ka-50\Cockpit\Scripts\SHKVAL
open up SHKVAL_init.lua
change the used_render_mask value to the following:
dofile(LockOn_Options.common_script_path.."devices_defs.lua")
indicator_type = indicator_types.COMMON
used_render_mask = LockOn_Options.script_path.."../IndicationTextures/SHKVAL_MASK.bmp"
render_target_always = LockOn_Options.flight.easy_radar