I received a coin yesterday from a reputable coin dealer. After examining the coin, I noticed that the coin was loose and touching the case from inside. I was able to smack the case and put the coin back to the correct position and I now see that the coin was in that pitched position for a while. The coin left around scratched mark on the case and the coin suffered some contact marks. I've reached out to the coin dealer asking for an exchange since the coin is no longer PF 70. They want me to pay for the shipping to and from their store since this is caused by NGC not them and that mark does not change the PF 70 rating. Correct?