I HAVE A 175 YAMAHA IT STARTED INTERMINTENLY NOT FIRING ON #2 CYLINDER SOME TIMES WORKS FINE PROBLEM HAS GOT WORSE NOW ITS A COUPLE OF CYCLINDERS WAS TOLD IT WAS MY CDI POWERPACK BUT NOT TO SURE IVE CHECKED COIL ,PLUGS, WIRES ALL IS GOOD AND GROUNDED PROPERLY. CAN ANY ONE HELP