Ive had a box filled with freight cars (many Bachmann) that I purchased in the mid-1990's unopened until I decided to do a layout for my grandkids. Train layouts have come a long way in the past 30 years. I did realize the need to start modernizing. My layout is DCC. I had to get DCC locomotives. I then realized that the newer locomotives have a different coupler than the older freight cars. Unfortunately, I dont have the physical capacity to change couplers. I live in Barnegat NJ. Does anyone know of a place or individual, that can replacement the older cars with newer couplers?