I noticed that the fretted notes on my J Bass are slightly sharp. I understand this happens because by pressing on the string I increase the tension - especially with my high-action set up. It's still strange that this doesn't occur at the 12th string. Notes up here aren't sharp at all after I fixed the set-up and intonation. But well before that, the first few positions, all the fretted notes are slightly sharp when the bass is tuned perfectly. Anyway, to get around this issue, I decided to tune the bass slightly flat so that the fretted notes are perfect. I do this only when recording; especially on songs which don't require open strings. Has anyone else been doing the same?