should I try to migrate to marlin 2?
I see a config file from Robert Gusek but there is only one file, and he says there should be 2 files?
https://github.com/psavva/Marlin/tree/bugfix-2.0.x.Cerambot happy to provide any extra info you might need...
I'm not using bed levelling as the delta calibration pretty much solves any heights variations via the manual probing. See G33 Delta Auto Calibration.