so today, we got a zex dry kit set up for 75 horse. the instructions online say to retard the ignition 4 degrees. the hand held for this truck doesn't have that feature. how do we compensate for this? or will it be ok to run the truck like it is? truck will be tuned to premium fuel and plugs will go one range cooler before the button gets hit. will one range be okay? we scored on this one. $100 plus $20 for delivery off craigslist.