It certainly sounds like acoustic feedback. The Atmos, being almost fully nude, is likely to be sensitive to that. It gave us no problems on our rig, but I can bounce up and down next to our table with no audible feedback, certainly no skipping. Speakers 5" from the tonearm? Yikes!
You need to address those issues I guess. You could confirm the diagnosis by listening through headphones, as Markd51 suggested.
P.S. to DocSavage
There's an easier way to adjust the a/s initiation point on a TriPlanar. Don't fiddle with the set screw holding the fishing line. You're as likely to break the line as anything, trust me! ;-)
Just adjust the pin sticking out of the front of the bearing cage (just below the dogleg). Swivelling that pin up or down controls the a/s initiation point.
You need to address those issues I guess. You could confirm the diagnosis by listening through headphones, as Markd51 suggested.
P.S. to DocSavage
There's an easier way to adjust the a/s initiation point on a TriPlanar. Don't fiddle with the set screw holding the fishing line. You're as likely to break the line as anything, trust me! ;-)
Just adjust the pin sticking out of the front of the bearing cage (just below the dogleg). Swivelling that pin up or down controls the a/s initiation point.