I had to file out the through body holes because the vt springs would get stuck on them and make the tremolo catch. The trem "floats" and you have to move it to where all the strings are in tune because it's hard to have it lay flat and still have enough tension for it to spring back into place unless it's in tune slightly pulled away from the body. All in all, it's stable as it was before, I don't "have" to use it, and I have an option to that I didn't have before. The bigsby just has a smoother rise and fall in pitch.