I suggest you send all of your highly dangerous old grimey Record cranks to me for proper care. They will be cleaned with gasoline in an outdoor area specifically made for just this purpose. Then road tested for numerous miles to assure no stress risers / cracks exist. This is an exhaustive test and requires many years of testing. They will be returned to you in due time with my stamp of approval.
Dangerous stuff not to be tried by the faint of heart.
Happy Valentines Day
Nick Zatezalo
Atlanta,Ga