i have an old Raleigh grand prix, pre-77 is all the info i can muster on the year as thats when they stopped using cotter pin cranks (serial number is 3046627 if that helps, no letters though so im not sure what year it is..). anyways, i was wondering if anyone knows of anywhere to acquire the pins. im not looking to replace the whole crank set with square tapered, just looking for pins. if anyone has any advice id be much obliged to listen. thanks for reading this.