I do not know how to tell if it is hitting the 1/2 cock hook or the disconnector. Do you mean "interruptor"? I see one of those on the parts diagram .
With the new sear in and the gun fully cocked, if I push down on the long leg of the sear, the hammer falls fine. ALSO, if I push the 'trigger bar' to the right side of the frame, the hammer falls fine! If I push the bar to the left, or leave it alone, the hammer stops at the 1/2 hooks.
It has to have something to do with the sear, no? If I put the original sear back in, it works fine.
I understand about the sear and the hammer wearing as a pair. I do not see much wear on the hammer.
Thank you again for your help.