If I were you i'd try the auto a little more. I get good depth with auto without all the falsing. Remember, it has three channels of sensitivity. Try marking a signal at depth. Back off a good ways and swing up to the target in auto. Switching right over to auto won't tell you the truth because the ET needs to read the ground a little to set the suto sens, it will get higher sometimes as you hunt, (or lower). Then see if you hit the target in auto +3. I'll be interested to see what you think.
J
J