Dan,
One can probably get by without making the four screw adjustments, but Kodak did have a specific sequence for adjusting those four screws on the back. According to Kodak every back had to be adjusted to mate with a particular camera. another words you weren't suppose to just swap a back onto a different camera without doing the adjustments. I have Kodaks complete instructions for the accessory back and that's what they state. The regular back has no adjustment screws and is mated to the camera right from Kodak. You and I might not even know the difference in a final print as to whether the back was properly adjusted or not. That said, mine are all adjusted and mated to a certain camera body. I'm still having a hard time figuring out where the OP is having problems.