The IR probe was not leveling reliable with my PEI bed. I added an NPN Omron inductive probe I had around instead. Much better now.
These probes have a working distance of 8mm in an M12 form factor, that is about 4mm for Al. Twice the distance of regular probes. This replaces the shroud in thing:3206498
Omron E2B-M12KN08-WP-C1 2M
Printed in Carbon fiber PETG 0.1mm layer height.