> You will probably find that any 6 car "s" sets are really made up of an L set is two cars, in C3xxx and D4xxx terms it is D-C. a 4 car S set would be C-T-T-C. the six car S sets are C-T-C-T-T-C, NOT C-D-C-T-T-C. so it can't be an L and S set together.