ok first time on this forum, need help. Engine runs great but has no throttle control. Wiring checks out good. Changed throttle switch and control on engine. Rechecked wiring to ecm found signal to ecm unsure where it supposed to comes out. Sent out ecm he said he put in new software program, but didn't work. I don't think he's listened to what I said to check. Wants me to send back an wants more money. What do u think could be the problem? Any suggestions would be great of what could be wrong