Pioneer DVR-115D problem

I have recently installed the above DVR in my PC. Installed it as "master" on secondary IDE channel with a Pioneer DVR-A06 as slave on the same channel. Am running XP SP2. At first the 115D would write to any media but had trouble reading them. Sometimes I couldn't see the written files and sometimes I could see them but not open or copy them. However, the A06 could read all media and files written by the 115D !

I temporarily solved the problem by re-installing the ASPI drivers but this solution did not last and the problem returned after a few hours. I have found another solution which is to disconnect the A06 completely leaving only the 115D on the channel. It now read/writes fine. However, I really would like to have 2 optical drives. Can anyone shed any light (no pun intended) on this drive problem ? I am using 40 wire cables although 80 wire is recommended for the 115D. Could this be the cause of the problem ? (PS I used to have a CD-RW drive as master with the A06 and that combination gave no problems).

Thanks for any input you can provide.

DeeBee.