I have a new set of TI Jazz FLats. Had them on about a month. I am a church player. When tuning up this Sunday with my electronic tuner, I decided to check the 12th fret tuning after tuning to open BEADG (5 wires) . All the strings are just a hair flat at the 12th fret. It's such a small hair that I have noticed no problems with being flat when playing with the other musicians. In fact they are so close that I found that I could go back to the open strings and crank it up enough on the sharp side to still get a zero indication on the open string, and a zero indication on the 12th fret. However it really takes some time to to do it and get them both in. Here are my questions... 1. Should I do anything at all? I don't play above the 12th fret, and have had no complaints from the choir boss. 2. Can I adjust the bridge without detuning the string? Keeping in mind that the TIs have less tension than most strings. 3. Being a hair flat, I assume I need to move the bridge a hair longer? 4. Am I checking the tuning in the proper way. Seemed logical to me to check it at the 12th fret. Or should I check every fret for BEADG.