Tightening the pivot pin is an easy process, even a guy like me can do it (I'm just a shaver, not a restorer) but I smack the pivot pin with a heavy spoon (backside) or a small ball peen hammer and that tightens it. Utilize a hard surface as a "backstop". Sounds like you need more than just a tightened pin. One of the restoring experts will sound off here soon, just be patient.