On Dec. 5, 2016 from 13:45-13:55, Nate changed out the PE102-75 flow meter with a PE102-38. Looking at the raw counter data it seems to be working. This was a used ebay purchase.
Data before this time used incorrect scaling factor (1000, instead of the correct 500 for a -75).
Scaling factor was not changed at this point, since the correct value is already in place.