Wear and tear of the years can lead one to believe they have bad wiring issues.
However, here are things to consider.
He might have an isolated issue, that happen to ONE of his M3D's.
He doesn't have a bad wiring issue, he might have a BAD HANDLING issue.
I have an M3D...and I have no problems with it (not to mention, I bought it used, with an odyssey case for $25)