Tail rigging
using fm reciever I have had problemms when they get loose.
I would get little glitches here and there until i tightened the screws, then no more glitch 'til they came loose again.
The wieght of the rods and the vibration from the engine tend to loosen them up quit often. I changed them to wire fishing leader and they very rarely come loose (less weight vibrating) and no more glitch.
I have not used PCM yet but this may hide the glitching.
Lou