Does anyone know where I can get a copy of a users manual for the MT2700? I am working on my high mileage 1990 Buick 3.1 Vin T with a miss. When I check the spark plug wires I have 1 post on each coil that shows as inverted(4-3&2)and the other 3 (1-6&5)as conv... Login to read more.