freebsd stable - Nov 2003 - umass-sim0 emuated tape always rewinds on no-rewind device

I've recently installed a Sony AITe130-UL USB-based AIT-2 tape drive. So 
far, everything works rather nicely: usbd finds the device, umass-sim0 
gets created, mt can rewind the tape, etc.

However, I'm using amanda to write the tape label and the tape gets 
rewound when the no-rewind tape device is closed (/dev/nrsa0). This 
causes several other problems.

Is there a quirk I need to set somewhere that's not in the umass.c 
source? How can I go about fixing this or achieving clue?


-scooter