My bro got one of the last O8S rollers before they discontinued. Just one rear dogbone on that. My Kaiju was 3 years ago. I got warranty replacements from RC. They did the same, so I put sleeves over the outdrives. Which is common on the Kaiju since they're prone to splitting cups too. Happens I know, just that most YT influencers never mention these things.I've seen a few posts of people having their pins just fall out of their new Arrma vehicles but that was a few years ago.