i have swaped a tbi on to a 79 motor. runs good but cant set the timing with the pointer. if you try and run it to zero it will stall out at about 10-15 deg before zero. i have checked the top dead to the dist pointer in the rotor and all is good for pointer at #1 wire with top dead. anyone else find this problem. ? i would like to get it set and done. right now it runs but likes to pop out the exaust a bit under heavy throttle and stumbles a bit off the bottom. motor ran good before on carb system.