Ok, my parents got me a keyboard for xmas, but it just sat in my house for a while, I wasn't really motivated to learn it properly. SO we returned it today for store credit. This store's selection of basses is pretty much limited to fenders, SX's, which must be very different to the american ones, as these are absolutely horrid, and epiphones. I intended to order a fender MIM fretless jazz, but have heard about their hit and miss quality. Just how much of a miss can they be, keeping in mind that it'd be pretty hard to mess up a fret job on a fretless? What else can go wrong, and how much of it is fixable?