hmm, relokick has nothing to do with the onboard roms apart from softkicking the machine from a different area of memory (usually holding much older, say 1.3 rom images).
i've run relokick on my old A4000T many times till i found WHDload, without any problems...
but any other roms wouldn't know about the A4000T's onboard SCSI, less than version 3.x wouldn't know about the onboard IDE or high density floppy drive, less than version 2.x would have problems with 040+ software...
doesn't solve this one though...
i take it everything is pressed in firmly, CPU card, roms, simms etc?
your other A4000's and A1200, are they on 3.1 roms too?