I've been MD'ing an old picnic area with very strange results....The area is tab and bottle cap infested....I'm using the ATPRO...pro zero mode....full sens.......gb 89-91 with the 5X8 dd coil.....I've been finding wheaties at depths of 2-3 inches....silver dimes ...1920&1946 at 2-4 inches....nickels at 2-3 inches.....lots of clad dimes....2-4 inches...and hardly any clad qtrs..The area is detected by at least 2 other MD'ers....Why are are there so many clad dimes and hardly any clad qtrs.....there should be more silver...or are the better signals being masked? Next time out I'm going to dig every mixed signal.....Any other suggestings out there?