does the neck have a truss rod? if you have just had the action adjusted that could also be the problme if it was adjusted too low... if all the strings are buzzing in a certain area then you might have to adjust thevtruss rod, if there is one...

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blues - its a religion...

+1

+ another 1

Also ... are you playing in standard tuning? A lot of people don't understand that if you play in a dropped tuning you need to set up the guitar for that dropped tuning so if that applies to you then you need to take that into consideration as well.

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Just think of how awesome a guitar player you could have been by now if you had only spent the last 10 years practicing instead of obsessing over pickups and roasted maple necks.

Yes, you need to have a "real" guitar tech to adjust and setup an acoustic. Take your time and research to find a good one. It will be worth the time and money in the long run!