Tried to set my bass up properly DIY, got the tools, watched the videos, and the result was horrible. Weird dead spots, tuning issues, etc. I am not unhandy, but I only have one instrument and experimenting with it further was going to get me in a bad place. Without a junker bass to practice on I was just eating into my practice time. So I took it to a luthier and got it done. They shimmed the nut and lowered the action successfully and the difference is incredible. So great to play now. A bit gruff? They were. Giant margin for maybe 20 minutes work or less and charging a lot for the strings? I suppose so. Worth it? Heck yes! I know the vibe is DIY here, but there is something to be said for division of labor and expertise. The minor adjustments this bass will need for the rest of its time with me I can do--I have the tools. This initial job? Left it to the experts and did not regret it.