Now that I am done, I think that the focus is perfect on my camera. The key difference is that you don't adjust the diopter setting at all. Here is how to proceed. Tape a chart or newspaper with good contrast to the wall about 4 feet away. Set the camera to use F2.4.
Depth of field is smallest there.
You want to have the smallest depth of field so you can see focus differences. Here is a link to a message in which Mike Chaney talks about which screws to remove to open the camera. Follow his instructions to get the camera open . Don't worry about the image at all. Hopfully the diopter setting will now be near the middle of the range.