i have a 1965 mustang coupe with a c4 transmission automatic , and a 302 with 4 barrel carburator in it, i am having a shifting problem. the car will go through first and second fine ,but i have to let off of the pedal just a little bit to shift in to third gear, but when it is in third gear it will slip in between third and second and will not go back into third unless i let off the gas just alil again , (its like driving a manual car riding out the clutch) ,it only does it between second...

1965 mustang with c4 automatic transmission not shifting properly