Asimut
1543
You are experiencing what is called the "Valjoux Wobble"
and it's perfectly normal, no worries 
/You will get used to it and who knows, perhaps you will like it (I do) 
If you wear the watch tight, the wobble will not be so noticeable.
Cheers,
Asi
New Panerai Owner
Apologies if this question comes up often, however I recently purchased a 164 and oftentimes hear/feel the internal mechanisms vigorously moving from time to time. I've never encountered this with any other automatics. This is my first Parerai and it was ...
If you feel something spinning inside the watch...
(surprisingly there was no reply to this post) it's just the rotor. And it's normal.
unfortunately, the owners of this site have not paid my February salary
so I am answering quite slowly. Some of us also have other jobs too (I'm busted now)..... Asi
You are experiencing what is called the "Valjoux Wobble"
and it's perfectly normal, no worries /You will get used to it and who knows, perhaps you will like it (I do) If you wear the watch tight, the wobble will not be so noticeable. Cheers, Asi