I used to have the media stuck in flash hole problem. Solution was to go to Princess Auto and buy a 50 pound bag of crushed walnut media - $30. This is smaller stuff and does not stick in anything.
Crimp and bullet seating.
Back the die out a turn so there is no crimping. Adjust stem down until you get the OAL you want. 1.120" is a good number.
Seat bullets in 10 rounds. They will be uncrimped, so you should feel a bit of a flare in the case.
Screw the seater stem up a couple of revs.
With a round in the die, ram all the way up, screw the die down until you feel the crimper hit the case. Turn a 1/4 turn and crimp a couple rounds. The seater stem should not be touching the bullets when you do this.
Examine the crimp. Adjust die in or out a tad, as required, then lock the die in place.
Crimp a few more rounds to make sure the crimp is just right - just enough to take away the flare.
Now run the crimped round up into the die and turn the seater stem back down until it hits the bullet.
The die will now seat bullets to the right OAL and will crimp perfectly.
If this makes sense to you, you can do it faster than you can read this.