Welcome Mike - I'm guessing you are the force behindGood evening all,
if you are running the Accel "Dual Synch " distributor it might be worth checking the position of the rotor arm. You can adjust the rotor position when you initially install the disi and phase the rotor.As they come from Accel the adjusting screws are usually not very tight and if the phasing is OK they are often left "as is" and can move. If you look at the base of the rotor shaft you will see two adjusting slots and either two allen screws for the early ones or torx screws on the later models. Might be worth checking to see if they are slack and the rotor has retarded itself. Probably OK but worth checking.
We are the Accel DFI EMIK for the UK, also TWM and Dynaformance, if you think it's an Accel problem I can put you in touch with the right people at Accel for help.
your input to the forum will be greatly appreciated I'm sure and fingers crossed Tim will have it sorted soon.