

It looks like the effects of heat warping if it’s all confined to the middle. First step is to allow the bed to heat up longer imo. The center might holding heat better or worse than the rest and needs longer to equalize. Is your printer enclosed? If so that should solve it. If it’s not then you may have excessive airflow across the bed.










You also could also attempt different patterns if you feel it’s the tip causing localized heating. On a flat print spiral is going to make the center hotter than the outside. Diagonal sweeps are going to do the opposite. If it’s on the side then sweeps w/ length for cold, against for hot.
Edit: since you’re using a .2 nozzle I would hazard a guess that you’re experiencing cold issues rather than excessive heat. Slowing down would make a big difference or switching to a more complicated pattern that spends more time in each area. Seems like you’ve got the right approach