[Ifeffit] LCF with different scales

[Hana]

Hi list,
I'm looking for a way to make LCF with standards that were measured at
different occasions and beam-lines. I did read previous comments regarding
this issue, but still need to clarify:
1. Does limiting the range to the smallest range help in this case (if spectra 
were measured with the same steps size, and a calibration standard was used)?
2. For harder situation; when different steps were used - I found that sixpack 
(according to its manual) interpolating all spectra to the same energy grid - 
does this solve the problem? 
I will be happy to be advised. Thanks,
Hana