night vision with scope/uzo problem.
 

this appears unrelated to any of the great mods offered, nor is it corrected by any of them that i'm aware of. during night patrols my periscope and uzo visibility is degraded by a series of concentric circles with varying hues to the center where the last 2" of diameter is clear. kinda of goo goo eye disconcerting, don't like it at all. is anyone aware of a fix for this. thanks.