Hi. I just got the ESI328 rpm/tach tool you recommended in the tool thread a couple years ago. Thanks cuz i was looking for something like that. Im guessing I. Need to set the rpm reader at 2:2 & will clamp to,either the negative coil wire or the spark plug wire. Is that the right setting or is it 2:1. I know its a waste spark with no distributor & 2 cylinders obviously so any tips would be great. Thank you.