With the SR board added to my SII and the early Eros trouble sorted I treated myself to an upgrade on the front end: A new Planar 3. (Feeling the need to help both the local and the UK's economies, I purchased it at a brick and mortar store.)
The shop was nice enough to include mounting and aligning my existing Ortofon 2m Blue with 2mm shims on the tonearm base to correct the VTA.
When I got it hooked up I found that while it opened up more of what is in the grooves (hearing the zils on Roger Daltrey's tambourine actually startled me a bit) there was a disconnect between my OBs and the subs: some missing mid-bass. I replaced the 2mm shims with a 3mm set and ta-da, top to bottom, smooth and coherent.
The extra height did not allow the dust cover to sit flat without pushing down on the counter weight, so in true DIY fashion I purchased an acrylic sheet and made my own.
I believe I am now hearing what the Eros and Stereomour II are capable of. Thanks again Doc and crew.
Karl