I purchased this die in 45ACP to use with my Dillon 650. To make a long story short, I'm having a lot of trouble adjusting it in. It either lightly seats the bullets in the case, or shoves the in too deep. Even small adjustments to the die body (not the micrometer) will change a barely started bullet to a deeply seated on. I'm using FMJ bullets. I have tried their instructions, but that leaves the die seated so deep in the machine that the lockring barely engages. But if I run the die up a quarter inch it will still push the bullet in to the same depth. I have tried incremental changes and it will go from lightly seated to way deep in an eighth of a turn of the die body. Any ideas what I'm doing wrong?