Lately I have seen a couple of references to "Grover 409" tuners. I chuckled a bit thinking the posters had confused that monster v-8 engine with our old standby, the Grover 309. Today I discovered that the Grover 409 is indeed a new model Grover tuner.
So, can someone do a quick compare and contrast between the 309 and 409 Grovers?
I did notice they have a worm over and a worm under model for the F style.
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