After talking with customer service at Minelab I took my lower shaft out of the detector. It came out in stops and starts just like the problems I was having. I reinstalled it back following the directions like I did with the first time.
What I noticed was that the tolerances inside the tube are very tight. When I tried to extend the lower shaft I had the similar sticking. But if I held the detector in my right hand like you would to hunt and then used the left had to extend the shaft with a little up pressure while at the same time a little down pressure with the right hand the lower shaft slid in and out easily. If I tried to pull it straight out, it would stick again. It did not take much pressure to make it slide correctly.
Not sure if this is supposed to be normal, but it seems to work fine for me. Give it a try. I will probably purchase another lower shaft to have my other coils on so will see then if that lower shaft is any different.
What I noticed was that the tolerances inside the tube are very tight. When I tried to extend the lower shaft I had the similar sticking. But if I held the detector in my right hand like you would to hunt and then used the left had to extend the shaft with a little up pressure while at the same time a little down pressure with the right hand the lower shaft slid in and out easily. If I tried to pull it straight out, it would stick again. It did not take much pressure to make it slide correctly.
Not sure if this is supposed to be normal, but it seems to work fine for me. Give it a try. I will probably purchase another lower shaft to have my other coils on so will see then if that lower shaft is any different.