They look fine to me. Here are three pictures. First is the same as yours prior to coupling; second, they are coupled; third with the couplers to the side so the pins are visible.
Three aluminum passenger cars were part of three cataloged sets. The 5008 and 5108W were pulled by a Santa Fe PA/PB set and included a dome car but no coach. The 5011 set was pulled by a 334DC Northern and included a coach but no dome car.
A forum community dedicated to model train owners and enthusiasts. Come join the discussion about brands, various scales, repairs, storage, displays, reviews, accessories, classifieds, and more!