Things have been quietly progressing with the Class 5A and the number of etched parts is diminishing.
The other thing I have been considering is the motor position and I have been trialling fitting it to the middle axle which would remove the need to chop some out of the brake cross beam.
By nibbling some of the boiler/firebox former away it has allowed the motor to slip inside and run without any apparent issues. What I am not sure of yet, because I still have to test it, is whether it affects the movement of the compensation beams.
There isn’t a great deal of room for movement in there so I need to test it before making a final decision.