Clearly you should have sticky tabbed every page.
Don't feel bad about the oral. Most folks have a few gotchas. For me, I somehow managed not to memorize Vfe. I completely took it for granted since I always referenced the top of the white arc instead of an actual speed. I was a bit sheepish when he asked and I fumbled. I glanced down at my kneeboard, which was sitting beside me on the floor, and he busted me for that. Went something like this:
DPE: "What is Vfe?"
Me: "Uhhh, well..." <glances down at floor>
DPE: "Woah woah woah, you don't know Vfe?"
Me: "Well, uhh, I know it's the top of the white arc and I always reference that before extending flaps."
DPE: "But you don't know what speed that is?"
Me: "Ummm..."
DPE: "What were you just looking at on the floor?"
Me: "Well I have a card clipped to my kneeboard with all of this plane's V speeds."
DPE: "But you don't know Vfe?"
Me: "I always check the white arc before deploying flaps. I could give you the exact speed by referencing the card on my kneeboard."
He let it slide after I rattled off some other V speeds correctly, but he didn't seem pleased I didn't know Vfe.