My models coupler height was right on according to the gages I use. According to the scale I use they weighed about 3.8 ounces and I added 1/2 ounce to each car. Also the trip pins on the couplers were low, (I do not use magnets but use skewers and use the trip pins as a handle) and I adjusted them up a bit. Otherwise the cars were "good enough" for me.