Level Loading (does this count as a loading screen??)
This hex edit shows that the names were changed to reflect who was really playing the game. Later on in the game when the scores get higher, the numbers for the score actually swap places with the last letters in the name. Surprisingly this didn't mess anything up!
this cart rebuild is pretty easy to do, in fact... more people should play around with this stuff IMO, and you could even make a little business selling custom or hard-to-find carts to your friends, or at conventions. all the ROM dumps are already online.