I am finally finished assembling my new to me AVL 16S A series CD1 - but it is missing the pins for the cloth storage beam. If I understand correctly - one side of the beam (away from the pawl) has a pin with cotter pin going thru the beam (if possible does anyone have a pic of this?) - the other side has a pin. Does this keep the beam from twirling? From the weight in the front from crashing to the floor? Can I buy these from the hardware store? What size are they? Really appreciate your insight here - I've no idea how this works yet. Thanks!