Hello, I'm a complete beginner!! Was at a show today selling new and secondhand gear. Dived in and bought 3 secondhand people carriages, thought I was buying Fleischmann but got home and found out it was LIMA, I have the phone number of the guy I bought from and will swap over to Fleischmann!!! as I want only Fleischmann rolling stock!! My question is!! from day one to now is all Fleischmann N rolling stock using the same coupling?? Thanks alot JD!!!