Cleaning packs

For RK05s (which is what we started out discussing), the procedure for cleaning the pack is in the maintenance manual. This is a fairly complete procesure involving opening the plastic case and cleaning the disk iteslf with a 91%/9% misuture of propan-2-ol and distilled water. At least one edition of the manual includes the wonderful instruction 'Dry dust can be blwon of wiht the mouth. Do NOT spit on the disk' Also, IIRC, when reassembling the casing, you _must_ insert a screw then turn it anticlockwise until the threads engange before doing it up. If you cut a new thread in the plastic (self tapping screws), you run the risk of puting little bits of plastic on the disk. For the RLs and RK07s, etc, DEC specifically told you not to attempt any cleaning other than the outside of the plasic housing. I would be very interested to know how to go further than that! -tony