Lee
...How do you have the ground balance set? I set mine just at a very slight positive rise in the threshold as the coil gets closer to the ground. I have the Signal Balance set at about 3:30 to almost 4:00 O'clock on the dial, a very hot setting if done right, it absolutely signaled on an 8" gold class ring set this way. The class ring read as Pull Tab on the meter. Mine wavers on the needle movement, say it hits on the "i" on Dime on the first pass, the next pass it may land on the "D" in Dime. A lot has to do with coil presentation, do you do tight little wiggle over the target at about 3 to 4 inches wide? or do you make full wide coil passes over the target? That makes a lot of difference. What you saw on youtube that may have shown a picture of the meter after it passed the target, the meter stays locked until you pass the next target.
PS: I forgot to add, coins may not always lay flat and parallel to the coil, they could be canted at an angle therefore you could be getting different meter readings
I once dug up a barber dime that read as pull tab in one direction of sweep and nothing from the other direction, never could figure out that one, even checked in all-metal and nothing else in the hole. Must have been on edge, nothing is written in stone on this hobby except if it beeps then dig!
