Possessed by the devil eh? They all belong in hell. I hate to sound like a Taylor salesman, but, of all the guitars I have owned, none has been as well balanced as this 810. It is close to perfect in every key. Those electronic things drive me nuts with all that jumping around, I have always used a 440 fork, and, I'm quite satisfied. The compensated saddle is a good bet. My old J 45 Gibson demanded one because the face had risen just a tad over the years and that threw to intonation off.

Funny thing about unwound B strings, on my 12 string, I tune it down to D and I can use a wound B. That solves the problem of intonation. However, they wont take standard pitch