Has anyone come across this before? I took off my Zero Delta QD to replace a screw and when I powered on the XP50 there is a solid black circle on the screen that covers part of the crosshair. It has been a month or so since I have used the thermal, but this circle was definitely not there before. Its quite large. I cleaned the lenses just to be sure, but its still there. Its quite large. Perfectly round black on the screen that covers a portion of the crosshair. I take a picture of the screen with the capture button on top of the device thinking I will need to email it to pulsar, but the captured image does not have the black circle on it. I didnt try using a video but assume it will be the same result. I guess I could take a picture with my phone through the eyepiece. Have yall ever heard of this?