Holding a razor blade on an angle gently scrape the backside of the rib comb until the surface is smooth. The backside of the rib comb is the side with the raised lip around the rib edges. This raised lip is what you want to scrape off with the razor blade.

Do the same for the gondola side making sure you are scraping the side with the raised edge.

Lightly sand the car side edges smooth.

File the edges of the car floor.

Press the floors into the sides.

Per the instruction sheet your gondola should look like this with the scribed lines on the bottom of the car.

Run some styrene cement along the seams.

Make sure the sides are square.

Cut the ribs out of the carrier piece.

Here we want to smooth the sides of the ribs. Do this by gently holding the rib comb assembly by the top rail and using your sprue snippers to smooth the inside of the ribs. This is best accomplished by applying a very slight pressure and pulling away from the top rail. Usually 3-4 passes is all that is necessary. Only pull away from the top rail which you should be holding. Pushing the sprue snippers will bend and break the ribs.

Align the ribs.

Apply styrene cement to the seams.

Cut a length of .060" x .060" styrene longer than the width of the car.

Slide weights in between the car floors. DO NOT GLUE THE WEIGHTS IN. The styrene and metal weight expand at different rates. Warping could occur if the weight is glued to the plastic.

Trim the excess .060" x .060" flush with the car sides.

Car end goes as shown.

Bolsters.

The first bolster part is placed in between the markings on the underframe.

Strip styrene is fitted into the notches to form the stringers.