I put a fresh battery on the car and it started right up, but it seems to be off time a good bit. The motor kicked back the second time i cranked it and it has some dieseling sound while idling. It doesnt want to idle any higher than 600rpm and wants to die without throttling, the air adjustment screw will not change the idle. That and theres a big cloud of nasty old gas smelling fumes coming out of the exhaust. i picked up a set of plugs a step hotter to resist fouling while im tuning it. i also am draining the old gas out today before i try anything. Is it said to put the trigger offset at 60 for a z that hasnt had its distributor moved from the factory spec of 10 degrees? I saw that somewhere. Anyway, i got a timing light and im going to try to time it. Do i need to turn off the megasquirt to have my changes to the trigger offset be effective?