I have been trying the 12" X 13" Nel Tornado coil on the F75. While doing the Fast Grab Ground Balance I have noticed that it is sometimes stubborn to Ground Balance. It will sometimes stay on the number that is on the screen until I do the up and down motion 10-12 times I have tested this by manually setting to a high number, say 90, when I know the ground is in the 60-70 range. Then when Fast Grabbing,it will stay at that 90 number until i move it up and down 10-12 times as noted above. It seems to eventually get the number right. I have tried raising it higher above the ground when doing the Fast Grab but that doesn't seem to help. I have read that with the Nel,any ground that is below 40 requires a Manual Ground Balance. I could always do it manually to solve the problem and for piece of mind but I like the convenience of the Fast Grab. I'm not planning on making the Nel my every day coil, but would like to know if anyone has used it with similar results....Thanks for looking
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