Ok, tried a couple things tonight.

1. Tried sending the serial data as a bunch of Serial.Print lines. Unfortunately, there must be something in the SimpleDyno software that doesn't work with this. Couldn't get the software to read or record any data.

2. I did an array with the Minima (as mentioned in my previous post). Here are some plots. Very nice curve but you can see in the zoomed plot that my disk isn't very symmetrical.