RSTS/E Question

One last go at this.. (3rd time = charm??) If anyone reading The List is familiar with RSTS/E V9.x (I am running 9.7) I have a small perplexity. I have performed a recent sysgen to add RL02, RK05, RX02, and networking functionality to RSTS on my 11/44. I have a pair of RL02s and an RL11 card installed in the machine. The RL02 subsystem appears to function normally according to the appropriate docs. I can init the RL02s, I can erase and re-init, and during the init process, if called for, the disk check patterns run to completion and bad blocks (if any) are found and written to BADB.SYS. I can mount the drives, and can see them mounted by SHOW DEV. What I *can't* do is read or write to them... the error message 'device not available' results from trying to alloc, dir, or any copy or pip operation. I have tried mounting the /PUBLIC to no avail. I have the RSTS Orange Wall coming, but it's not here yet... I'm hoping I'm doing/not doing something dumb or obvious... Thanks and cheers John