Hmm, so the consensus is there is extra plastic which needs to be removed from inside the bore on this stone? Is this just a QC issue? It’s had no more or less use than the other stone which works fine, so I’m thinking that must be the issue.
The plastic body seems really soft so I’m a little uncertain about using a hard abrasive like a phosphor/bronze bore brush on it. I’ll have to think on that one.
