That is likely your culprit, then, yes. If you hadn't seen the video, Adam specifically says it's meant to be used with DS (~1:00 mark). He also clays with the car still wet for even more lubrication. Here's that video:https://youtu.be/D8FbkYmg2qI
Adam states in his video this is not a replacement for the traditional clay bar. And in fact, it's meant more for when you do plan for a full correction. It would also really help people that detail lots of cars, speeding up the process. While to each his or her own, I'd offer these new tools are indeed meant for convenience, and when used as designed, can provide incredible benefit. But as always, if you buy and don't like them, their 110% gurantee is there for a reason. Either way, good discussion.