The strengthening bar is complete with the addition of two small bolts added to the rectangular piece as well as the "S" part.
Because I want to keep the drive wheels off for further work and access, I want to postpone the attachment of them to the part that goes on the inside of the hull that the wheel gets glued to. Using the brake parts that come with the Aber set- I made a hole in the centre of the resin on the back to help locate the part properly. Next I cut a disc from sheet plastic using a pin in a pin vise that was used to score a circle with in a circle template. This was glued to the back of the resin part. This was needed to fill a small gap between the Tristar part and the resin part- basically to snug up the fit and ensure the pin on the outside would contact the drive wheel when it was to be attached later in the assembly process.
Just a dry fit after gluing the two break parts to ensure proper alignment.