Fascinating update, in playing around trying to fix the problem I accidentally broke my start gcode, all the newlines got mangled turning it essentially into one long line.

of course the print errored because I never set a first layer temp, but it bed leveled a small grid in the middle KAMP worked!

M117 M140 S0 M104 S0 START_PRINT EXTRUDER_TEMP=[nozzle_temperature_initial_layer] BED_TEMP=[bed_temperature_initial_layer_single]

So something in this start code is making the KAMP mesh not work, I’m going to try not calling START_PRINT and see what happens… in a few hours when this print is done