With the exception of a few commented lines, that Startup-Sequence is identical to the one I use with WB35 on my hard drive.
I just realized something. When I cold boot (power-on), the memory is not seen. But if I do a warm boot (Ctrl-A-A), the memory shows up.
I noticed previously that when I hold down the mouse buttons on boot up, the board appears in the Boot Menu diagnostic. But If I wait a couple seconds to hold the buttons (I suspect after AmigaOS ROM Update loads) the memory board no longer appears in the Boot Menu diagnostic.
Annoying. It may be some reset circuit on the MB not functioning properly.