I bought a 16C on eBay with a messed up 5 key. The key still has a click and still registers, but there seems to be less travel then the other keys (the problem is especially noticeable if you use the 16c while its sitting on a desk instead of holding it in the hand and pressing the keys with the thumbs).
Is this something that can be fixed, or should I try to get a return? I have a USA 12c with a similar feeling on the FV key (though not as bad) which I can use for practice.