P2 with the ImmersionRC 600 tx. I'm trying to use a set of Fatshark antennas. The issue I'm having is, as I screw the antenna onto the tx, I lose connection (the red LED goes out) after the first couple of threads. I have ZERO connection after that. I've tried the following: The stock antennas work fine, screwed all the way onto the tx. Tried a different mushroom antenna on the tx. Same issue. LED comes on only when the antenna is at the ends of the threads. LED/connection goes out once it's screwed on fully. Any suggestions?