Im sure you have checked the pilot jet
Make sure that the slide goes all the way to the bottom.
My 81 250 is a bitch to start when cold because I had to cut the slide so much to get it to run snappy on the roll on.
Your 84 has a reed valve thou and shouldnt need to be as crisp.
How I start my 81. Tickle until fuel pours everywhere , kick 5 times , tickle again , repeat . when it fires leave alone till it stops, repeat again a few times, then she is warm and will start first kick.