Take a look at:
This synth initially refused to complete the 360 linkage and set up as a broad
ark. by using MS-ICE to join every adjoining pair and then adding the joined
pairs to the synth collection, I was able to achieve 100% synth with a
recalcitrant full 360 panorama. Looks pretty good, except that the point cloud
is totally bogus, looking like a snake rather than a ring.