Hi 'timestamp',
Sorry I didn't get back with you earlier. I am preparing for a "Road Trip"~...Going to do some fishing in the Fla. Keys.
Though your NOD timeline and back story is a bit vague, I would agree with many of the responders here.
All things considered, and with what you have told us thus far, I would go with your effective date as sometime in April 2009.
I just don't have enough details of your situation. The C&P exam could of been ordered by the DRO to help you with your claim...???
Also, You know, I think the stressor rules have changed since you originated the claim for PTSD in April of 2009.???
Please keep us posted.
Best wishes in the new year,
Cmdr.Bob