I have never seen any JP PC 2004 events that pass with CGR. In fact, neither have Secure members.
Secure's previous Admin, I believe his name is DeGee, received the JP PC 2004 eggs himself. He palparked them himself and they are the most common set around. Another person, KJ also palparked a set that I have myself. She gave a brief description on the event and traded her set to a few people. There are also numerous other collectors that have sets of JP PC 2004 and 2005 eggs and most are/were from sites like Secure and ddoggs' site.