.2 Nozzle calibration questions

I just switched to a .2 nozzle for the first time and was wanting advice on a few questions. If possible Id like to get some help from you fine people. Here are my questions:

  1. Noticed that the default generic profile for .2 pla has a volumetric flow of 2mm3 which is considerably lower than a .4 nozzle. I suppose this makes sense since less material can flow out at one time but didnt think it would be so much lower. Is okay to up the flow or should I leave it as is?

  2. Im using the new bambu calibrations to make sure that i get the best quality possible but I noticed that with a .2 nozzle itll only allow a manual flow calibration and nothing else. Bambu wont allow me to do a manual PA calibration. If I just do the dynamic calibration at the beginning of a print will it save the K value for that slot if i dont do it again on the next print? or does it delete whatever value it comes up with at the end of the print?

  3. I tried using orcaslicer’s calibrations but they arent very well made for .2 nozzles either. Flow is about the only thing i can calibrate with orca. When doing the PA calibration it seems that the test is using a really low speed for the max speed changes even when upping the max volumetric flow or process speed it only uses a value of 20 as the “fast” speed change which makes it impossible to see the difference in the PA values.

  4. Are there any tips for calibrating filaments when using a .2 nozzle?