So I did a search and did not come up with much. Specifically, I'm looking for any personal experiences with bass tremolo bridges. I have a Fender Strat which came with a factory tremolo bridge - in the old days, we used to call them whammy bars - and this one locks, so if you're not using it, it can be locked to avoid going out of tune. I've been looking at the Kahler 7410 system, which seem to be the most popular for basses. I'm starting a new build, and I think it may be pretty cool to use a tremolo bridge. I can't imagine that it would be used often, which prompts my inquiry with regard to some kind of "locking mechanism" like on my strat. Does anyone know if the 7410 has a "lock"? Does anyone use this bridge, and if so, are there any problems with going out of tune, or lack of sustain? Also, they recommend a teflon nut and "locking" tuners. Anyone have any experience with these? Thanks in advance.