[t2pleakage] Why don't we use the common coefficients in the joint_fit function of tod_ops.t2pleakage submodule?

[hnakata-JP]

I am just curious about why we don't use the same coefficient for the t2pleakage function. I mean the model in the joint_fit should go

def leakage_model(dT, AQ, AU, lam):
        return AQ + lam * dT + 1.j * (AU + lam * dT)

not

 def leakage_model(dT, AQ, AU, lamQ, lamU):
        return AQ + lamQ * dT + 1.j * (AU + lamU * dT)

. Temperature leakage can contribute the same amount to polarizations, right? Please correct me when I misunderstand something.