Not to hijack the OP'S thread, but I have a similar problem with my
'72 Duster. When I try to start the car, especially when it's hot...
it is hard to start. When I go to turn it over, and then let go of the key quickly, and slightly pull the ignition cylinder back, it will finally start the car. Has new battery/starter/coil/Accel ditributor. Also has a Summit brand electric fuel pump. Any idea's??