I have a CSMKII/060 + SCSI kit.
I remember once clocking the 060 to 66MHz: After this the SCSI controller went nuts (checksum errors, or something), and wouldn't operate correctly until we put the 060 back at 50MHz.
I'm guessing the SCSI controller operates at a specific frequency which must match the processor speed in a way. Chances are that it will work after reflashing for correct frequency.
I don't know where my floppy for it is, but I think I have a phase5 drivers dir on one of my homebrew CD's from that time.
I'll check back after getting off work...
