Did anyone get to the bottom of the "Channel 18" issue? I have come across this twice now with X4R and Taranis. A couple of months back, I re-flashed my receivers and Tx module with the LBT firmware, then one of my receivers showed this channel 18 issue. I re-flashed this receiver, and the problem went away. Today I had the same problem, possibly on the same quad, I am not exactly sure. Tried many things - in the end I rebound the receiver, and then it worked again. I am not convinced I have found the source of the problem, hence my question to you guys.