In this configuration WSJT-X is transferring audio modulation directly to/from the radio through Loopback and xDAX with no involvement from dogparkSDR - except to make sure you have TX DAX enabled in the Radio prefs and a DAX Channel selected in your Slice prefs...
Create a default Virtual Device (Loopback Audio) in the Loopback application.
xDAX
WSJT-X