The "Notch" System: * 1 Notch = The smallest offset (tightest).

3 Notches = Your current "winners" (0.15 for 1" and 0.20 for 1/2").

6 Notches = The largest offset (loosest).

Documentation Entry: "Tolerance tests should be performed whenever switching filament brands or PVC manufacturers. Use the 10mm ring array; the '3-notch' ring represents the gold-standard fit for the current Centauri Carbon calibration."