A friend has this guitar... https://shop.fender.com/en-US/acous...0sce-dreadnought-all-mahogany/0970113022.html ...and broke the tuning key off one of the tuning machines. She wants me to replace it, which is no problem so long as we can find the part. The specs just call them "Chrome Die-Cast", which isn't very helpful in looking them up. Any idea where I can get these? A single for the treble side would be ideal, but a set would be fine, as well.