I've received a lot of crap IP% accessories from amazon: used items sold as new, items which did not fit the description, and unusable garbage. I just bought an apple lightning cable from amazon and the fit of the plug is very different: it is a much tighter fit, and it wiggles just a bit once plugged in. My original cable fits with less resistance and stays put once plugged in. What are some tell tale signs of non-authentic lightning cables? Or, am I simply dealing with item to item variation instead? Both cables look identical, and are of the same length. The cable was shipped in what seems to be an authentic apple box.