I forward from IBM a technote that might apply to us as heavy mouse users within the code.
(This is an actual alert to IBM field engineers that went out to all IBM branch offices. The person who wrote it was very serious ... the rest of us will find it rather funny.)
ABSTRACT: MOUSE BALLS AVAILABEL AS FRU's (Field Replacement Units)
Mouse balls are now available as FRU's. Therefore, if a mouse fails to operate or should it preform erratically, it may need ball replacement. Because of the delicate nature of this precedure, replacement of mouse balls should only be attempted by properly trained personal.
Before proceeding, determine the type of mouse balls by examining the underside of the mouse. Domestic balls will be larger and harder than foreign balls. Ball removal preocedures differ depending upon the manufacturer of the mouse. Foreign balls can be replaced using the pop-off method. Domestic balls are replaced using the twist-off method. Mouse balls are not usually static sensitive. However, excessive handling can result in sudden discharge. Upon completion of ball replacement, the mouse may be used immediately.
It is recommended that each replacer have a pair of spare balls for maintaining optimum customer satisfaction, and that any customer missing his balls should suspect local personnel of removing these necessary items.
TO REORDER, SPECIFY ONE OF THE FOLLOWING: