I guess it is always possible that there could be a different set used. But, before I'd go that far, I'd like to see a scan of the "P" chips you have. Do you have a scan or picture? If you do, can you post here? (Follow the instructions from the Index page, labled as FAQ's.)

If that is a problem, please feel free to email me the pics and I will post them here for others to see.

Jim