spektrum Dx3R binding problem

[Arct1k]

This is a known bug by castle with the V1 ubecs - the fix is to either remove

- the signal wire from UBEC
- use a diffent slot than battery in rx either with a Y or just channel 3

Something to do with the RX and UBEC getting confused over the signal channel getting mixed up with the castle link...

This is being fixed in UBECs made from late nov but no way of telling which version you have... It was a hardware change...