oops.. justinm caught me. We are working on a C185 panel. You were also correct with the transformer part#, it should be 157B2744G1. I will try to order under that #. Now all I need is to find the 205A7104G1 thermal protector.

I heard a couple of years back that FSIP only does repairs now and does not sell any parts.

Thank you everyone for your help.