I’m new to the forum and I’m needing help with a mot power supply build I’m doing. I have pulled two transformers from microwaves and both of I have damaged the primary winding trying to remove the secondary. It’s a bear to remove them and I want to know if the damage is too bad to work with or if I need another transformer. I am trying to build a transformer with a pi filter capable of providing 7 volts and around 20-24 amps continuously without no ripple. Please help me determine the best course of action. I can post pics of the damage once someone replies and after maybe someone more experienced provides their input.