I'm pretty sure I solved the problem. I had "Mute" loaded on DSP A instead of "Thru". That was throwing off the wet/dry mix. Now that I have "Thru" loaded on the DSP I'm not using, I get an accurate portrayal of the levels when signal is passed.
Sorry about the mix up….er…so to speak.
I still have not solved the problem of not being able to hear the second delay lines in presets such as vintage delays (654) or 2 x 2290 (6537). I've tried A–>B routing and A||B with no success.