Sam,
This is the SB re the secondary seat stop, this is an old copy, so check as they keep updating the expiry date and SB, so it may well (should be) still be running, it covers the P1 seat only freebie wise, but that's the main one, we never fitted it to the P2 on ours just the P1 about a year ago.... see
http://infinityfbo.com/images/mainte...e_bulletin.PDF
If you are changing the main belts you need to be aware of this, if you fit rewebbed etc they will need replacing in 18 months if not done by manufacturer or by approved company.
EASA Airworthiness Directives Publishing Tool
open the PDF for the AD
might save you a few bucks