My '55 T.F. hinges were factory carriage bolts. I ground the heads off,and replaced the pins,with a set I bought off of "E-Bay",(4 pins,plus 8 bushings),for about $12.00. One of the pins,(the lower passenger side,cause of the trouble,)was frozen in the hinge body,and broken-off,flush with the "top hole". I put the body in a vise,and heated the area around the pin. When the area was heated enough,the pin was driven out with a punch,and hammer. I then gently drove the bushings flush with the housing,and installed the pin. I ground the pin off,about 1/4" below the bottom hole,and peened the end,to keep it from "Riding-up". "Riding-up" could result in the pin eventually raising above the bottom hinge hole. Hope this helps.
