Tom, I have a carbon sheeted nomex honecomb tray in my Mantis. I mounted the RX on the tray with a velcro strap, and ran the elevator and rudder wires through a 1/2" dia hole in the tray b/c the servo tops were on the same side as the RX. A few weeks after test flying I was getting glitches on my elevator during corners. I thought interference or turbulence, but it was too persistant. Checked the elevator and rudder servo wires, and they both had their insulation cut through by the tray. Put a slice of silicone header tube in the tray hole, and it solved that problem.