I recently got my CORE radio. I also have a Champion SRS and 2 PBR-26D receivers. The CORE radio is updated to 3.25, Champion SRS is 0.1.0 and the PBR-26Ds are 2.7. Everything is updated to the latest version. The TX settings in the Champion SRS is P2-Bus S.Bus. Framerate is set to 18ms. One receiver has a Y connection to the telemetry port in the Champion SRS and is connected to RX2 in the Champion. The other receiver is connected to RX1 in the champion. Both receivers are connected into the P2-Bus port and NOT the fast track/data port. Batteries are Li-Ion 5800Mah set to 7.4volts. I created a new model in the CORE and I setup all of the functions. When I bind both receivers and turn on the system, all of the servos are twitching/jerking. This happens randomly and moving the sticks on the radio makes the twitching even worse. The servos just jump around all over the place when I have the system turned on, even when I don't touch the radio sticks, the twitching/jerking of the servos is very severe and changes all of the time. Even the center position of the servo keeps jumping around. I've noticed when the CORE radio is turned off and the Champion is ON, the servos are normal and no twitching occurs. The moment I turn on the CORE radio, the twitching/jerking of the servos begins. Richard, if you happen to read this message, I'd prefer if you could give me a call at +1 517 375 5338. There's a lot of stuff to explain and it would be better if we'd talk over the phone. I'm completely lost on this issue and don't know what to do.