[mirwa]

Anything is easy provided everything is right.

Example, electroplating is a 3yr apprenticeship, i am not qualified but i do some small electroplating in my shop, i can plate and get a good job provided everything is right.

When something goes wrong in the process, I am stuck with no solution.

Guitar setups are much the same, a setup is simple provided everything is right, new strings, check nut height, adjust relief, check saddle height. Job done. If something goes wrong your stuck with no solution, you could need a neck reset, a fret level, a warped saddle slot, a excessively rotated bridge, a loose fret and so much more, these are what may prevent you from doing a good setup, a local tech can spot these and more and deal with them.

Steve