Strange starting issue

http://www.summitracing.com/parts/SUM-850003/

This is a copy of the MP electronic ignition conversion. Comes with a new distributor, control module, and wiring harness. I picked up power for the control module from the run side of the ballast resistor. I checked the air gap in the distributor and it is set at .008 as per the instructions. I haven't tested the voltage to the contol module (ECU) with the engine cranking yet.

Another symptom is the tach I have registers fine at an idle but begins to fluctuate as you slowly rev it up to 2,000 - 2,500. It will fluctuate 300-500 RPM. What I find strange is the tach fluctuates up instead of down. I replaced the spark plug wires, replaced the ground to the body at the battery, and replaced the ground from the back of the motor to the firewall, but this problem persists. I also changed the ground for the tach itself with no change.
Thanks,