We recently purchased a 1960s teak credenza by Bernhard Pedersen with tambour doors. The doors make a popping sound and resist a bit when opened. We rubbed candle wax along the track to minimize resistance there, but the popping sound hasn't really improved. Is it possible to damage the doors or individual slats by opening the doors, even gently, when they resist? Is there anything else that we can do to repair the door mechanism?
Any suggestions greatly appreciated, thanks!