I have a friend who has a Chinese Les Paul copy (Stagg L250) and he asked me to set it up. This is the guitar: There is a problem though, I can only set the strings so low before fret 19 causes buzz. I'm not sure if it's a fret problem or a neck angle problem though. I should have taken another pic, I'll take it when I go to his place again, but you can see it has a backwards angle. The thing is that while the portion of the fretboard that goes on the body has this backwards angle, the neck itself doesn't, it's pretty flat unlike on an actual Les Paul. Notice that the distance between the strings and the fretboard increases as we move towards the nut. There's another thing that bothers me about it: the posts (both the tailpiece and the bridge ones) look lifted from the side opposite to the neck. I'm not sure if this is a manufacturing defect, if it's alright, or if it's a problem caused by string tension. Seen from above: Seen from below: Thanks in advance folks!