Thunder Tiger Pro .46 owners
I have the TT46pro and 46fx, Also 61pro and fx. I am swapping stuuf between them all the time. Everything should fit fine. 61fx is everybit as healthy as the 61fx.
As far as what happen to your original question, this happens all the time. You start a subject on Hobbico Retracts and a couple days later you slamming the transmitters with frequencys that have not been made for 30 years.
The fault here lays on the moderators. if they see a reply which is not the same or at least directly related, they should automatically delete it. That is how this crap gets started.