Gateway is NodeMCU-12 ESP-12
Sensor is on NanoV3
All radio's tested and proven on Nano's but not on NodeMCU as could not find a script that would work.
NodeMCU wired exactly the same as on MYsensors site. Have checked multiple times the wiring.
Capacitors fitted to radios

On sketch for gateway, I have commented out code for local sensor. When not commented out this works.

Sensor code on Nano is the same as commented out code that works on gateway.