Out fell a Number 8 1" long woodscrew...  but the pack was still worked fine.
 --
 Pete                                           Peter Turnbull
                                                Dept. of Computer Science
                                                University of York
  
sounds like the screw I hit.  BTW, I once saw an RK05 that ran 1 year
between PM's with the filter still capped with the BIG RED shipping
cap (but fully installed and clamped to the feed hose).
Worked error free for a full year with no crashes.
(Fixed by me and not noted in the site management guide.  I'm still not
sure who did the previous PM...)
Bill
+---------------------------------------------------------------------------+
| Bill/Carolyn Pechter | 17 Meredith Drive | Tinton Falls, New Jersey 07724 |
| 908-389-3592 |  Save computing history, give an old geek old hardware.    |
| pechter(a)shell.monmouth.com                                                |
+---------------------------------------------------------------------------+