Metatron
I have a problem with Tron, I have just changed to Spectrum on it and I am getting some strange things happening list below.

Switch on TX put in link all ok.
Run back and forward all ok
Switch off TX for no signal test; Tron slowly
turns to the right
Turn TX on, it stops.
But if I just plug in link with out TX it doesn€™t move

It has two Blue Boat speed controllers and a v-tail adaptor from the old RX.
The red+ wire from one speed controller signal to the RX is removed I was told this was for the BEC I think; I have bound the receiver 2 times no difference.
The wheels move slowly and doesn€™t cause a risk to anyone but it€™s not right.
Any ideas?