I was checking the grand finale cache as part of the ParkCache challenge and noticed that several of the coins are missing although there is no sign of muggling going on. I watch this pretty closely and there are 4 missing coins. The log shows only those people who have posted on geocaching.com as having found it. Is this normal? I understand that some may want a keepsake from their journey but it would really help me if they would post what they take so that I know when I need to add some coins.