Just had my chain rivited at a shop, rode bike once and x rings have broke, muppets must of done it too tight. No angle grinder so will be sat in garage filing the heads off for half a hour or so. Some split links come with wire spacers you put in so you can't tighten them too tight. mine did ( think it was DID type ) the mechanic said he didn't need to use them as he's done loads of chains and knows what he's doing. Obviously not.