Brake Pedal Clicking

When my 86 Carrera gets hot, it develops a small click when the barake pedal is depressed. I think I have figured it out. It appears as though the little bearing joint at the end of the brake pedal is worn. I can see it move slightly to the side when the click happens. Does anyone know where to get this part or how hard it is to replace? THe part has an eyelet bearing on the end I can see but I have no clue where it goes after that.
britt