Problem with cell capacity

Hello,
I am trying the diffrent SEI growth mecanism that are being used in pybamm at diffrent temperatures, th issue that I’m facing is that when I use my cell parametres during cycling i get the cell capacity without issues but when i tried calendar aging with the same cell parametrs the cell capacity went from 80 Ah to 130Ah even tho i didnt change anything
another issue is that when i use my own NMC-OCP fonction during cycling it works perfectly but during calendar aging it gives me an error that say the voltage must be positive