Scott sent two kits neither would program. Called Scott no issues send them back, sent back the radio boards. Tested ok, back they come. Again no programming, this time popped them in a Lionel O-6-O they program…..hmmmmmm. Take them out put it back into the GG-1 turned of a new LED light at the work station…….poof they program fine. Go figure.
‘just something to keep in mind.