I have spark on 3 of 4, all new ignition coils, spark plugs and spark plug wires. On the left side which I believe are cylinders 2 and 4, one terminal wire works from the power pack and one does not, have switched them around and one sparks, the other doesn’t, is there a fix or do have to get all new power pack? Also looking for a wiring diagram for the motor if possible. Having some trouble figuring out what goes to what and tilt and trim problems too. Thanks in advance!