I work on guitars and a guy has asked me to look at a Traben bass which the previous owner had defretted. The owner would like the frets reinstated which raises two questions: How easy is it to reinstate the fret grooves? They are easily identifiable but how easy are they to clean out? Anybody know what gauge of fret wire is used on a Traben bass? As its been defretted I have nothing to go on. I emailed Traben days ago but no response.