I recently added new heads, intake, cam and lifters, and a carb. Since I have this all put back on I seem to have lost power to the distributor. The motor turns over but gets no spark. My lead from the cab to the distributor seems dead. Nothing has changed but I have no idea what happened. Im pretty sure all my grounds have been put back in place. The ground off the manifold to the firewall and the neg cable to the alt bracket are back in place. anybody have any clues as to what I might be missing? Any help would be appreciated. Thanks.