Hi,
Yes, there is a different forestay/bridle for the spinnaker versus the uni-rig.
The latest assembly manual covers all of this, including 2 new pages for the snuffer (pages 26 & 27) and can be downloaded from:
http://www.hobiecat.com/support/pdfs/fxoneassy.pdfAttached is a page from the manual
Good luck!
Steve
Hobie FX-1, Sail #211