[ step 1 ]
pb     = fix
kex    = fix
dw     = fit
dr2_i = fit

[ step 2 ]
pb     = fit
kex    = fit

[ step 1 ]
pb     = fix
kex_ab = fix
dw_ab  = fit
r2_b   = fit

[ step 2 ]
pb     = fit
kex_ab = fit

Update the `method` file with the new names
FIX: Update the `method` file with the new names
