I just noticed something inside the case, like a small piece of plastic? Should I be worried about this dinting the card? Ask to return it? Partial refund? Sell it to someone who doesn't care about it?
You couldn't (or I couldn't) see this in the listing and it wasn't mentioned.
Interested to hear people's opinions, don't have much graded experience
Try to put a bit of force on the sides and shake, it might give it enough room to slip down.
That'd give me the $h!ts too i reckon, if you can't move it i say try for a refund and find another you're happy with
and then 1) you would have trouble selling because people would always query and question if it was real or 2) have to submit to PSA for grading or re-casing again. which no2 is what I would do but it's just easier to sell and look for another.