Very nice. Just thinking out loud here, I have found hills require ground balancing much more often. Could it be that those who were there before you did not follow that rule? Especially the AT Max because it has such wide range of GB. I suggest everybody read as much as you can about it. Read the AT Gold manual, too. I found a lot of good info in a nugget hunting book ZIp Zip the second edition. Those nugget hunters swear by the exact GB. I admit they are working in rough ground, but that's where people miss targets. I just think most people are not that concerned about it and I think that's a big mistake.