As far as Full motor field current and weak motor field current, was that info available on old motor data tag. Or was that calculated from survey data before the mod. The DSD 412 has fairly precise instructions for setting these two settings. But make sure you are using a very current manual, there are many different versions floating around out there. One you are confident on motor field strength, inertia 41 is very tricky to get set precisely. The nice thing is magnetek is very helpful over the phone.