First thing to do is do all the checks with a PPM receiver. A PCM rx can hide a potential problem. It's a thought to always set up a gasser with a standard rx and eliminate any notable probelms before installing the pcm for flight. The PCM receiver is there to provide more info to the system and to reject some outside rf, not to mask any pre-existing internal problems.

Next thing to do is to try and determine where the problem is coming from. It can be a long and painstaking process, but you will have to use the arrangement that you had prior to the crash. It will be a one item at a time in a process of elimination, starting with the ignition switch. Then move to each and every servo and extension. Never try two items at the same time.

The throttle rod can be any material you want, as long as you do not have a direct metal to metal contact. Some form of plastic or nylon between the rod ends and any ball links or clevises will do. A simple nylon clevis will break the conductivity chain.

Look for loose nuts and bolts that may be rattleing on a metal surface. Check that you are using a resistor plug. Check the shielding on the plug wire. Check the connectors on the small ignition leads for looseness. Check the condition of the battery wires, etc. There are so many things to check that it can appear intimidating, but it has to be done.

BTW, 130 feet is not really not that good of a range check. With the current crop of computer radios, well over 200 feet is very common.