Using two RL02 drives on OS/8?

I'm trying to find a manual detailing the operation of an RL02 under OS/8. The Bitsavers archive only has manuals new enough through the RL01. Can someone point me to the proper documentation? Meanwhile, although several years ago I did manage to build an OS/8 system with two RL02's on SIMH and transfer that disk image to an RL02 pack, and BUILD shows the appropriate device names, when the second drive (1) is accessed, the data actually comes from the boot drive (0). Just now getting around to playing with it again. Version: OS/8 KBM V3T, CCL V3E. The relevant portion of the BUILD printout: (I didn't have enough handlers to add the "leftover" E drives anyway) R2SY: *SYS R20A RL20: *R2A0 *R2B0 *R2C0 *R2D0 RL21: *R2A1 *R2B1 *R2C1 *R2D1 DSK=RL20:R2A0 I can even unload the heads on Drive 1 and ask for a DIR of its logical drives, and not only does OS/8 not hang or at least give a "NOT FOUND" error, it gives me the data from the corresponding logical drives on Drive 0! ASSigning DSK to the other drive doesn't make any difference... What am I doing wrong? thanks Charles