I just purchased the ASIAIR Pro because the D850 is listed as "tested" and I wanted the simplified approach to astrophotography. However, I cannot focus, plate solve, polar align, or go-to because the first preview image taken gets stuck will not refresh. If I switch my guide camera (ZWO 120mm) to be the main camera, I can focus, polar align, plate solve, and go-to. However, once I acquire a target and switch the zwo 120mm back to the guide camera I can't guide because the AAP says "exposure failed." I have tried new cables and using different USB ports on the AAP. Please help.