I agree with JLMounce. I initially had a 15/16" bore when I switched to manual discs. That master started leaking. Went with a 7/8" replacement. The pedal was noticeably easier from that little change. I can imagine that your pedal effort is very high with 1.125" Also, on the brake pedal arm, you have to go to the hole closer to the pivot. Verify that as well.
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