I was hunting some of our central Texas black dirt this weekend and was in some virgin soil, but wasn't getting any deep hits. This ground opens every dry spell with cracks a plenty. Back at the house I checked the performance of the standard web coil, with minimum discrimination I'm getting 8" quarters, 7" on dimes and nickels, but when you advance the disc to nickels, I get 4-5" on nickels, and when you advance disc to just above zincolns, i get 6-7 on quarters and 4" on dimes. For you other Eldo users does this match what you are seeing or do you think it's time for a service trip? I bought this used and have really enjoyed it, complementing my silver