Last week I ordered a number of parts for a project I'm working on and received one part in error. I ordered a Front Pivot Pin and received a rear take down pin. Order number was 363508. I have placed a new order 943339 for just the front pivot pin and associated parts. Is it possible that you could help me out with shipping on this to correct the order? I don't need a return of the mistake cause I can use it eventually but then again don't want to pay shipping, which costs more then the parts, to get the correct Pin.