MGS4 Act4 Flashbacks.

[Southe,]

well im on act 4 and im trying to do the flashbacks, but none of them are working only ones i got to work were the MK .23 one and the camera tilting one. none of the others working so is there something i need to do to activate them or should they just happen?

[Frodo13.]

You have to keep tapping X.

[Southe,]

i know how to do them lol i mean theres special ones which give 1,000 dp each one and its like.. you go to the left and ur mean to hear the conversation from the 1st game. and then go to the camera ect. but none are working for me