That’s about 1.6 mm, 0.5 mm more than I’ve heard of before, and double the warp I had before Bambu sent me a replacement bed under warranty.
Submit a ticket with Bambu, include the log from a small print with auto-leveling turned on.
I didn’t like the printhead holders I found for an indicator. The measurement could be affected by misalignment of the carbon rods, and extra weight of the indicator. I also did not want to risk damage to the rods. I made a small holder that could slide on a rule held perpendicular to the bed.
