98 chevy 7.4L compcams towing cam part#01-412-8(37) timing at 1200 rpm is 25* sapose to be 0*-2* to be in spec DTC p1345 cam/crank correlation can pcm re programing help my timing ive tried distributor a tooth over both directions towing cam but no low end power.2000+rpm power comes on like a light switch any one with an educated guess please help-CamminChevy