Hello all! I have a 1976 F-150 with the 300 I6. First,I just recently replaced the distributor cap, rotor and pick up coil on the distributor. After setting the timing the vacuum advance does not work. Causes the truck to stall as soon as I hook up the vacuum. Anybody have a good link for setting the timing on this motor. Second, the truck sputters once I am above 35 mph, still after changing the above.