Hi there I've got a 94' musicman stingray 5 and I kind of hear the bass is kind of always out of tune! ... I checked my tuning regularly and also the intonation of the bass, but something always sound kind of a few cents out of tune when I play with other people. I don't know if my ears are failing me or could be a problem from my amp (i got an Ampeg SVT2 and 6x10 cab) any help? Thanks!