727 trans won't seat-up on 440

I remember once i spent hours upon hours beating stomping standing the tranny straight up and still couldnt get the converter to go in deep enpugh, finally after i called someone he told me to get a small screwdriver and wiggle and adjust the 2 pump lugs and then try to put the converter in and what do you know it went right in, you may want to try that if you havent already.