I have sent my 314-2 shaft in for the 3rd time a couple months ago with ferrule issues. This time they said they would not warranty it because the shaft diameter is too narrow. My question is since I do not clean my shafts or use sand paper on them. Can my shaft diameter drop enough to go under warranty standards by just chalking the stick and chalk dust acting as an abrasive? I was offered a new 314-2 at a discounted price, but I said I was not interested since I have had issues in the past with their ferrules. Thoughts?