I have an old summit with fm rx/tx, which I have upgraded with TQi tx/rx from a Funny car. When I just plugged it in and turned it on, only steering and throttle worked. No function at all on ch3-5. I tried the 5 different model profiles, and the only one that works correct is profile 5. Which is supposed to be for T-maxx and s-maxx. Profile 1 gives no function to ch3-5, profile 2-4 reverses some functions, and 5 is ok.
The problem is: Every time I turn of both the transmitter and the reciever, I have to Select model profile 5 when I turn them back on. If I switch only one of them off, and on again it is ok. Why won't profile 5 be "stored"?
It might be time to contact Traxxas... kinda sounds like a firmware issue to me.
Whatever it is I just typed... could be wrong.
I'll try to solve this with the seller on ebay. I live in Norway, and the cost of sending it away will be more than buying another one.