Steve, the reverb is working with no volume drop, but it doesn't seem overly strong. I can live with it.
Turns out the volume drop is only when I used the effects, when I turn on the intensity and use trem-vib.
I thought it was the reverb but I had both effects on at the same time.
I have pedals that do trem and vib so I won't be tearing it down for that either I guess.