Tektronix TG501 plastic latches needed

[mskobier]

All,
 I have a Tektronix TG501 later series module that is missing the side cover plastic latches. These are the plastic slotted twist latches that are located on the rear edge of the side covers for the later 500 series modules that holds the covers in place. Does anyone know where I can locate a couple of these latches?


 Thanks