I had some buzzing issues with my little kickaround Ibanez AC240, that know one (local guitar store set up guy, and a GC set up kid) could identify. I noticed he was the only Ibanez repair center in my state.... so I called and set up an appointment. I brought my 210e with me for him to make sure it was within spec.
He used this scope that he created to look into the guitar body and found no issue with the bracings, he then tested the neck adjustment to make sure nothing was happening with that.
He identified that I was having "back buzz" and built up my nut a little then sanded down my bridge a bit and vwala...... no buzz and a fingerpicking delight.
He reviewed my Taylor 210e and found it to be excellent and needed no work done to it.... he stated that the strings were set on the low end of the Taylor specs, and he couldn't do any better.
After taking care of my Taylor he took down my prefered settings for playing, for any future work he may do for me. He let me know that the Ibanez specs are not as tight as the Taylor, but if in the future if I wanted to get to that level he could refret my lil' AC240 for what seemed like a very reasonable price. I thought he was straight forward, and offered good information along the way