Thanks; I'll fix my files. The rows in the ROM array were much closer than on the other chips, so I had to use a different algorithm to ID the 1-bits, and I was left with more bits to correct than usual.
Were there any emulation differences due to the chip being a 1400CR? The die looks like a TMS1100 with 4K ROM.
Edit: I'll pull out my Merlin carcass and compare.