I'm getting some wear on the non rubber washer side of my coil and my lower shaft. You can see the pictures I posted here .. two of the pictures show no wear at all and the other two pictures show a lot of wear. I Beach hunt mostly on the beach and within a foot or two of water. I rinse off very well after every use I pulled a deus completely apart. I think the design is really good to keep the stress off of the coil ears for land hunters but I think it falls short for Beach hunters were sand can get in there and grind away. It's got them divots all the way around the end of the shaft. Those holes hold sand and even though I have the coil as tight as I can get it you can still move a quarter of an inch maybe even a half an inch because there's only one washer holding the coil from pivoting. It needs to to lock down the coil really well to keep it from rotating while you're detecting. What do you guys think? I did buy an Anderson carbon fiber shaft that should take care of the problem. The shaft actually feels really good made very well I made a couple of minor changes to it and it'll just be my everyday shaft for everything.