I purchased the buzz stop to fix a couple of issues with my Jazzmaster.
Saddle/bridge issues and string buzzing is a common issue with jazzmaster, it can happen even when properly set up.
The product is well built, solid, sturdy and works perfectly to give the strings some more tension, eliminate buzz and increases significantly sustain. There are of course different schools of thought about using it on jazzmasters as using the buzz stop does take away the characteristic twang and short response of the jazzmaster sound. This happens. The tremolo/whammy bar does get harder as the tension on the strings is increased. Those of you who are looking to resolve jazzmaster issues without changing its characteristic sound, the buzzstop is not for you. Better off getting another bridge or spend more time fine tuning it, raising the action and adjusting the truss rod. But if you want to give your guitar more singing power, presence, tuning and string stability on the bridge better palm mutes, and eliminate buzz from the strings hitting the saddle screws, the buzz stop does the trick. Its just a question of what kind of sound you want out of the guitar and deciding accordingly.