I know there were some manufacturing problems with early guitars, but I am not experiencing any real noticable gameplay problems like unregistering down-strums or double-strums or anything else commonly reported.
I’m wondering if an ideal guitar has a somewhat loose strum bar that you can move a little without fully strumming (like mine), or if it is supposed to stay in center position and be more “clicky” like other guitars, say the Guitar Hero ones.