Got a nice CZ5 changed to CZ3D spec's and calibrated by Tom D to 11 inches from Dan the CZ Man. Been reading the forum to learn everything that I can about them. In simple terms does a CZ (in my case a CZ5) that has been sent to Tom D. get boosted for a lack of a better word and does he make the nickel come in as a high tone. Trying to understand what changes are made. Hope to try it out this weekend. Happy Easter everyone! Steve