More info
Also I'm using a standard Futaba switch(2 years old). A little more info: The reason I switched over to P.C.M. is because of past interference. I had some problems with the throttle surging and occasional unexpected and fraction of a second loss of control especially on low final. Some club members thought that I was too slow and the airplane was nearing stall, until one day it decided to throttle up all by itself at the end of the runway. There were alot of logging trucks in the area with huge C.B. radios and several people had interference problems. So I decided that the P.C.M might be a better choice. The trucks left the area and the P.C.M. seemed to fix the problem until yesterday. So I'm leaning toward the metal throttle clevis(A dumb thing in the first place). Maybe over time,the metal pin in the clevis enlarged the hole in the carburetor arm causing more vibration. Bass1