Nah, if the original Dirty ROM SIMM works flawlessly the socket's not to blame. ROM-inator II arrived and gave identical "error code" so it's likely the "clean" ROMs across the board. MODE32 may have to do. Its lower OS ceiling doesn't bother me, gotta check with the folks who've reported successes.
When I find its cable or the time to build one I'll check results with the SE/30 version of the Pivot. joethezombie has reported problems with using the RCPII/IIsi in combination with other cards, hrmmm . . .
Thinking along those lines, what OS are you running? Mine's System 7.1 (for any Macintosh) and the etched marking on my board are:
DGC
12VO
21 149S
Bolded number is negative space inside an etched rectangle, so I'm guessing that's a particular run designation?
SE/30 Variables?
Board Revision
Production Date
ROM spec.
OS
other cards installed in combination
. . . same for VidCards in question???