I tried this in some other forums - then I noticed this one. Since you guys build these things... The E string on my jazz bass is a little unstable when I try to tune, even though I have a compressor in front of the tuner. If I tune up to E, the next time I strike the string it will be a little sharp. (that's one or two lights on a cheap LED tuner.) Sometimes it seems to be a little flat, then jump a little sharp, then back to flat again. So I end up trying to tune so that the "average" point is E, but I'm never really playing E. If I tune to E, I'm pretty much always sharp, and if I tune it a little flat, I'm flat when I hit the note before it goes to the right pitch. It is hard to describe. Basically, I feel like I can never quite get the E string in tune. It is not a huge difference, and if I had a better tuner I'd say how much, but I'd say it is detectable and slightly noticeable. I always tune up to pitch. I've stretched and pulled the string, replaced string, etc. I don't think it is the string. What could this be? Badass II bridge, nut, tuners...what else is there?