I tend to be more conservative. I would be cautious even with a less fine instrument. Don't go around filing the frets unless you really know what you are doing. If you mess around with the nut and the saddle, probably the worst thing that will happen is that you have to pay a pro to replace it (them). I think you can damage the neck if you start playing with the truss rod and you don't know what the final result should look like.

A setup by a mechanic is relatively cheap.

Murray