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Thanks for your support. The problem with the bass is, that the neck has a bow ;-(. I'm not ready to give up right away, and I will probably try to repair it and for the fretboard I'm tempted to rip off the worn frets and to transform it to a fretless bass, by pouring resin on it and polish it until it's leveled again. Another possibility is to give it away to a beginner for the 300 E. I learned to play bass with much worse instruments.....