Just calibrated after running for 48hrs my new (to me put I took it apart and got a repair kit) trident. Now I'm getting an 8.15DKH on it and I'm getting a 9.3DKH on salfert. Which if it's consistent doesn't rely matter cuz all I want is stable. But which do I trust more? Why such a drastic difference? My trident CA=467 MG=1389 while salfert is CA=420 and MG=1305.