Thank you for taking time to respond.
Not knowing anything about 80 conductor wire or even 40 conductor wire I did some research and found this in an article about 80 conductor wire:
Aside from the above, the cable can be treated the same way as a 40-conductor cable. Since it is of higher quality, it can be used in place of a 40-conductor cable in older systems without any issues. However, it does not directly replace a 40-conductor cable select cable.
Note also that the 18" length restriction associated with the original 40-conductor cable applies to this variation as well.
from which I linked to this article: http://www.pcguide.com/ref/hdd/if/ide/conf_CS.htm
It seems as though based on the factory configuration (both bundled drives had their jumpers in 'cable select'), that there is probably 40 conductor 'cable select cable' connecting all the drives, which means I need to read more and figure out what to do. I may need a new cable (which may or may not fix the problem , since my pattern of usage may have set the configuration of master/slave.