So from the papers that are not on freeexampapers.com, I have the following ones...
MATH HL (MS + QNs)
2007 - May + Nov (P3 - Statistics and probability)
2009 - May + Nov
2010 - May
PHYSICS HL + SL (MS + QNs)
1999 - May + Nov
2009 - May + Nov
2010 - May
CHEMISTRY HL + SL (MS + QNs)
2009 - Nov
2010 - May + Nov (May 2010 has Paper 3 TZ1 missing)
GEOGRAPHY HL + SL (MS + QNs)
2011 Specimen Paper
ENGLISH A1 SL (MS + QNs)
2010 - May
If you want me to send you them tell me your email and which papers you want.