Editing Jr. Pac-man is a little different. First of all, there are no shared portions (thank you Bob), and it is nearly contiguous memory locations. The best way to describe it is reading in a row of 17 bytes in reverse order and drawing it on screen. There are three "sections" if you will that you read in so it does make it a little tricky to decode to an editor since you want to see it all in correct order. Anyway it was really hot yesterday so I played with this until the fireworks came and then figured out what I was doing wrong this morning and voila!
Once I had the editor in place it was pretty trival to make changes so now I have a proper Title screen for my Jr. Ms. Pac Hack.
For anybody keeping track here is the binary with a modified title screen