I am using some Safetran signals on my Mojave route that are giving me some trouble. On both single track and double (or diverging track) signals when I am viewing the coronas up close no problems, as I move away I notice the red corona appearing even though the line is showing green for a clear block. The farther I move away the more intense. As I move back up close it fades and eventually disappears up close. Can I fix this?