My 706MKiiG seems to have a bad connection where the power cord plugs into the radio. Sometimes the least movement will cause the radio to turn off. It even happens sometimes as I'm keying the radio. I thought it was a antenna issue at first shutting down account high SWR but the only thing that will get the radio back on is to wiggle the power cord (the power switch will not turn it back on). Has anyone had these same issues?