Got my new Golden uMax yesterday and read the booklet. Took it out this morning for a 45 minute test run without really knowing the machine. As picture shows I intentionally dug all so that I could get typical "junk" to help adjust the notch on it. I have yet to really understand that feature, but figure with the normal fair of trash items I should be able to mess with settings at home here. I like the clear sounds from coins and am glad a also picked up a nickel on first run.