[wrench87]

the only thing i can think of is make sure you are 14 degrees before top dead center and not after?, i know on the 5.0 mustangs they have 2 scales so it is easy to overlook. iam not sure how the fe balancer is marked. you may also check and make sure you have a ground strap on the back of your cylinder head to the frame, i remember moving my distributor on my 342 with mass flo and hearing the fuel pump cycle due to the distributor looking for a ground through dis body.