My stock SX string guide (round style) on my 4 string SX Jazz is a royal pain in the ***. It has a ton of sharp edges, the "tunnels" aren't big enough, and I'm just tired of messing around with it.
This looks like it would be perfect for me, a lot simpler to work with, but Hipshot notes it as being for 5 string basses, coming stock on Roscoe 5ers and USA Fender 5's. Is there any reason it wouldn't work on my 4 string SX jazz?