Finished building my 42' Flats, two parts of the build I found difficult was the attaching of the Vacuum Cylinders, there was very little surface to stick to the frame of the wagon and it took a number of attempts to get there. The other bit was the lugs, there are 42 to each wagon. It was the filing the burs off the small etched parts, you have burs on 3 sides, that was so tedious so after doing 126 I was losing the will to live.
I was anxious to see how they would run as in my experience flat wagons can be very unstable. The test area would be a part of the track that reverse curves over points.
Failed on first go, the wagons jumped the tracks.
I tried them with containers and they ran well on the straight but did not like the curves.
I had used Richie's method of attaching the couplings and did not realise that they do not snap home in the 'pockets' so some came loose. I'll glue them and that should sort that problem. The bogies are attached to the wagon with a screw and nut but one of the nuts came off.
So some fine tuning is required but the first Christmas 'invasion' arrives tomorrow so modelling will have to be curtailed.