@owend Thank you...i open the gcode dictionary nearly everyday and i'm still missing some 😃 However as suggested in the dictionary i've put in tpost0.g (i'm on a single extruder) so i'm sure that it is always called and, if no filament is loaded, i can stop the print with a conditional gcode.
So, i was so dumb that i loaded a wrong filament profile on prusa slicer. It was the same PLA but the wrong color. That particular color is 1.8mm in diameter instead of 1.75. Switched to the correct profile and everything went ok. 😰 😰 😰
If the height map shows random peaks and dips, that is caused by inconsistent trigger height of the Z probe. The IR sensor suffers from this when the bed surface is reflective to IR, for example glass or PEI. Putting a matt black surface under the bed improves the IR sensor in this respect, but it's still not as good as some other types of probe e.g. Smart Effector.
If the height map shows ridges at one end of the X direction turning into valleys at the other, alternating with probing direction, this indicates backlash in either the carriages or the joints. Lubricating the joints and carriages may help. If the carriages are the source, higher belt tension or higher motor current may also help.
Yout latest height map is a lot better than earlier ones. It still shows effect #2 to some extent, but it looks as though you have eliminated #1.
I have a 250mm 240VAC heated delta bed (6mm aluminum tool plate with a permanent print surface) I never installed on a delta I have scrapped since. It should about fit the Rostock Max V2. Send me a private message to sort out of we can strike a deal if you're interested in getting it shipped from Germany.