Hi all. I recently purchased a Quattro a few weeks ago, and I've been using the factory pre-set coin mode. I really like what I've learned about the Quattro so far, but I had a few questions on target i.d. and noise cancel. Alot of times I will be hunting in a field and I will get a good target signal and i.d., but then when I check the target from different directions I get different i.d. numbers, and some seem to "jump" around on the screen! It will go from 34 to 16 to -9 back to the 30's again. I like digging "all target" but after awhile this gets really tiring, especially when you find nothing. So I was wondering if there was a better way to check a target signal before digging it with the Quattro? And finally, I was wondering when and how often I should noise cancel the detector? I have read in Andy Sabisch's book that some people noise cancel every 300 ft. or so. And I was wondering if I need to noise cancel after first turning on the machine, and if I should "again" after I choose my search mode? I have read that when you noise cancel there should be no metal under or near the coil and that it should be kept still. But when I have tried to noise cancel in some fields, I can't seem to find a spot where there's no metal under the coil? (I switch to "all-metal" mode when I try to find a spot to noise cancel). Any suggestions or advice would be appreciated. Randy