i got a uMax Bandido it is a 96 model its not the bandido II Air test it gets 6" or 7" inches and on a pop can it gets 12" to 13 " inches.In the ground about 5" inches when the coin is buried .Today i buried a silver half dollar at 6" and the thing wouldnt even make a sound no matter what i did and i took my V out and it hit strong and the umax badido was supposed to be sent in and checked not long ago.Does anyone out there know how i can get more depth with this machine?Any help would be greatly appreciated.