Volts really high with acceleration.

Check the voltage at the ballast blue wire and see how many volts it differs from the battery when doing the rev-test. A poor voltage sense supply will create an over-charge
because the regulator isn't seeing what the battery is, so it boosts the "on" time until IT sees the set-point voltage. Possible causes are any & all terminations between the
B+ supply thru the bulkhead,the column connector,the Ign. sw. itself, the splice in the blue regulated voltage wires etc.....

Which regulator are You using?