The June 2nd release to Jaunt Cloud Services now has improved pole stitching as an available parameter.
This improvement to the high quality renders extends the stereoscopic region closer to the poles, while also providing an intelligent assessment of the distances above and below the camera. This helps mitigate ceiling distortions and any mounds or pits appearing below the camera. If these issues are present in your output, enabling the Stereo Poles and setting the Camera Distance parameters may provide a better result.
If you have any questions about this update, please submit a ticket for additional assistance.