They got back to me and said I need to tighten to stop then turn two full rotations back. I also found instructions on their website which have similar steps. They didn't address whether the stone needs to be replaced.
I asked them some follow up questions but haven't heard back, been over a week now.
I will replace the stone since the epoxy is coming off and I'm too lazy to fix that. Having written that, any idea whether I have the large or small drum? My current drum has an 8.5" diameter and 5.5" internal height. I did not find drum dimensions on their site.
Thank you!