Disabling HP65/67 card reader write protect

[wallyt]

I would like to re-record some pre-recorded cards that seem to have lost their data integrity. I would like to record onto the original factory recorded cards since they have all the program nomenclature nicely printed on them. Has anyone thought of how to do this? I have tried to stick some tape to the end of the card, filling the cut so that the reader thinks it is a recordable card, but have not had much success with this.

Is it possible to temporarily wire a switch to the circuit that detects the card's write protect status, say the pad under the little ball, that I could toggle when I need to record a card?