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I am getting lots of noise with no AC input, and not much of a response when I do give it an input.
My understanding is figure 29 is using the Op-Amp to scale up the DC output to the same gain the AC input was attenuated. Is that correct?
Take a second look at fig. 28 and 29. The input in particular and the inverting opamp.It's not just to scale it.
Second, why did you suggest it?
Now, why do you think i'm getting something close to a 10x gain in my circuit? I don't see why I would be.
No idea, I don't know how your circuit looks
You could whip up a simple constant amplitude (perhaps with 2 or 3 switchable settings) test-generator for the purpose - it's so much easier to deal with a circuit when you have a known amplitude/frequency to rely on.