to take care of rust issues use evap o rust . . i put 3 gallions in a 5 gal bucket and let soak for 48 hours , pull out of bucket rinse off with water,dry with towel , and wala nice shinny metal no rust ,not even in any pitted areas. as far as the the pin that was frozen either bore out the hole in the sleeve or put a thin brass bushing in it , but to tell you the truth just lubing it real good should do the trick for next 50 years