We need to replace a coil spring. Please see attached photos. (The full coil is not shown in Photo IMG_2668 because part of it snapped off). The coil is stamped #832. See IMG_2672. Window is likely original to the unit (~1990), but I can confirm if necessary. (This is for a rental property).
Also, should we replace both coils (L & R) at the same time? I presume the cartridges are okay, but let me know. (Also, if the coil comes preloaded onto a new cartridge, then that may be a good option as well).
William