The mailman delivered a 10.5 coil this afternoon and I had to give it a try on the Silver Umax even though conditions weren't the best. The first signal was a very strong signal . After digging I saw something shiny and thought for sure I had a silver dime. After getting it out and closely examining it I noticed it was a girl scout necklace item with STER stamped on the back. What a way to start off with the 10.5 coil ! I also found some clad but due to the weather I cut things short. The 10.5 may replace my 9x8 . I'm not sure why Tesoro dicontinued these coils. Looking forward to using this coil more.