I don't think that Klinklang needs two sets. Substitute and Return are both better than Wild Charge about 90% of the time, and I think you can just make it a slash or even AC it. It's completely redundant to use both Return and Wild Charge, since while Wild Charge does hit a few targets harder, Return hits everything else harder and still beats most of the same things (Life Orb Return 2HKOes Slowking, you beat Qwilfish without Haze thanks to Clear Body and Life Orb, and you still lose to Poliwrath). The only real utility it jas is against Moltres, but with Stealth Rock it can also be beaten with Return. So basically, everything that Wild Charge does is done better by Life Orb Return. So you can make one set, slash Life Orb, and basically scrap the second set, since there's pretty much no reason to use it.