Kohler cv20s racing lawn mower loaded w/ Lakota fly ,cylinders, HP cam, bored out 30 over. I have magnetron coils (stein). I have tried 3 sets and still get one cylinder cutting in and out at 2800 to 3000 rpms.
Timing is perfect, no backfires, new spark plugs, racing carb. Trying not to spend anther $500 on Vodoo coils and timing plate.
Any suggestions welcome?