After further study of the available pictures I remodeled the nose - the tilted sides were not straight but showed a compound curve towards the tip.
I used a splitted Aristo FA-pilot for the slightly inclined RP-pilot
The shell was shortened to the correct length.
Additionally I reworked the front truck - removing the center axle and fixed the former rotating front axle to the power block.
A quick set-up of the trucks and the shell