parking brake problem

i've a really annoying noise in my car and finally found it on the parking break handle. when the recall service was taken care of, the handle was left loose. i can move it side to side about a half inch either way and up about two inches before the e-brake starts to engage. when i am at highway speeds it starts to junp around by itself and make noise. i've already brought it back to the dealer and a second dealer, and both say it is fine. is there any way i can adjust the slack in the cable, or has anyone else had this problem and found a fix?

thanks

Recall Number: 00V349000
Dates Manufactured: OCT 1993 to OCT 2000
Number of Vehicles Affected: 434000
Date Owners Notified On: Unavailable
Vehicle Description: Passenger vehicles equipped with manual transmissions. If a vehicle is parked with the parking brake not fully applied and not in first gear, as directed in the Owner Guide, and the self adjustment pawl subsequently skips one or two teeth, the vehicle could move on some grades.
Consequence of Defect:
This could result in unintended vehicle movement and a vehicle crash without prior warning.
Corrective Action:
Dealers will modify the parking brake control and install a plate or over-bracket to the control to lock the self adjust mechanism in position following adjustment.

so... anyone know how to fix the handle?