Spectrum 875 cut chart below 1/4"

[tex006]

Just picked up my first table (not my first plasma cutter though by a long shot). Needing to set up kerf and cut speed for my Spectrum 875 with XT60 torch, 60A tip. Included manual only has 1/4"-7/8" cut chart and no mention of kerf size anywhere (I've got my program set up for .055" for now).

Anybody have one of these machines and willing to share a few settings? I'm looking to do some 16ga & 20ga. cuts for a small project.