I have a 'crafter' electro acoustic, It was second hand when I bought it a few of months ago, but looked in good knick apart from a little ding in the side that hardly notices which the shop knocked off £50 for. I ended up paying £349 for it. I noticed when I got it home the'B' And 'E' strings were a bit rusty so i replaced them. I played it for about 4 hours a day, and have changed the strings again. But sinse I've had it, I've noticed a buzz on the strings especially when the capo is used on the first fret, not so much on the second.
It's not the way I play because I also have a 'faith' acoustic that I bought new that doesn't do this. It does seem to get slightly better as the strings age, and dull, but it by know means disappears completely. I did get an engineer that the shop employs to lower the bridge, as it was set a bit high in the factory, but this hasn't made much difference. If I really put my fret fingers down hard, it does stop it somewhat, but even with well calloused fingers, they get sore after a while. this surely cannot be right? Could it be worn frets? if so, how can I tell by looking at it, as I'm not that experienced in the mechanics of a guitar.