CBM PET 2001 restoration tips?

Does anyone have a photo, PCB layout, or access to a real board so that they can check ROM chip locations for me? The 6540 ROMs in mine are arranged (left to right) as: 018 (PCB loc. H7) 014 (PCB loc. H6) 012 (PCB loc. H5) 016 (PCB loc. H4) 015 (PCB loc. H3) 013 (PCB loc. H2) 019 (PCB loc. H1) (6540 #010 is at the back-right of the board, location A2/A3. Character table, I assume) Seems a bit odd - I'm just surprised that they aren't linear. Odd that there's no 017 either, but then there's no 011 - possibly they did that so the two couldn't be mixed up. Date codes are all in 1978, so presumably I'm looking at a first issue of the ROMs? I'd just like to rule out that someone hasn't pulled the ROMs on this at some point and put them back in the wrong positions :-) (annoyingly the schematic correlates ROM memory location with PCB location, but not ROM part number with PCB location)