Is it worth the money to pick these up for my trail rig? I've got a 12 bolt out of a 72 blazer. Do they really break that often? Would it be better to just keep some spare c-clips and gear oil with me? The zuk might be flat-towed occasionally, so would it be a better idea to get a c-clip eliminator kit for that reason? I've also read you need to have one if you plan on running a spool (which I do). What is your take on it? Thanks!