Cervelo P2 saddle angle adjustement: please help a newb

I would like to adjust the saddle angle but I’m a mechanical idiot. I took the saddle off by removing the double-headed threaded bolt. The saddle rail holder comes off easily.
What next? Do I pop out the round inserts from the seatopost and re-insert them at a different angle? They seem to be in there very tight…

http://www.bikesportmichigan.com/reviews/Cervelo_P2C_2008/lg/P2C155.jpg

There is another bolt you can see under the back part of the seat. It has a round knurled head and is the PITA in the process. Basically your seat angle is adjustable as you vary how far this bolt is turned in or out in relation to the other bolt, the one you vompletely removed to take your seat off. If you want tip to come up, loosen front bolt then tighten the back bolt. If you want tip to come down, loosen back then tighten front.

Be careful not to strip the the rear bolt. Pliers are not necessary, though you can use needle nosed with a piece of cloth to protect bolt head. Best way is to just use your fingers on the rear. Start with the front bolt loose and the your should be able to tighten/loosen/reposition rear bolt to the necessary insertion with your fingers. Than tighten down the front. May take a little trial and error to get it just right. It all needs to be pretty tight when you are done to prevent squeeks, but oncwe the rear is positioned correctly, all the tightening should take place up front with an allen wrench.

Do I pop out the round inserts from the seatopost and re-insert them at a different angle? They seem to be in there very tight…

You’ve got it. They may be tight, but they will come out.