My PhD wasn't in scanner technology, but glad to have helped a bit. I didn't actually think I had helped really...the effect still seems to be occurring on the case, but not showing up across the card so much. Another thing to try might be to just scan the card area, just to convince yourself your settings are good, as I think it is the raised edges on the case that are causing the focusing adjustments and therefore the lighting artifacts. I'm pretty sure I have used my V100 for PSA cases and not had this issue though, I will have to try some again soon to see if I can replicate the error.