The lower shaft has started to twist, I took it apart and the issue appears to be the enlarging of the button hole to the point the button pops right through. The cam lock is as tight as I can get it but there is a lot of play. I will be questioning Minelab if this is a warranty issue hope they don't say this is wear and tear as I have only had the detector a short time and at this rate will be going through several lower shafts a season. The wobble is also causing the button hole in the aluminum middle shaft to get larger. I attached some photos. Are there better options rather than having the same issue every few months?