I have a 1985 Mercury Black Max 150 V6. I started it up this spring to find out that the starboard side is not firing. I unhooked the two yellow wires on the rectifier and started it up and they worked so I thought it was a bad rectifier. I replaced it and it didn't help. thought I got a bad one so I replaced it and still the same problem. No fire on the starboard side. Don't know what to do next. Just a thought, could it be old wiring from the stator.?. It ran fine last year when I put it to bed for the winter. Please help... Thanks