To: Ron & Steve, Thanks for the replies, but I just don't see any way around this, then to try taking it apart. The burrs will touch & lock against one another, and from that position, I get about 3/4 of a turn on the adjustment nut, which produces a grind a bit too fine for vac pot brewing (though, I'm still using it for that). Also, there is nothing clogging the burrs. Before I perform surgery on it, does anyone know how the inner burr is attached to the main shaft? Is the shaft itself just threaded? Could the burr have slowly moved down on the threads to limit adjustment? At any rate, thanks for the input, and any other suggestions or comments would be appreciated, as it's going to be a couple of days before I get with this problem. Also, as I quickly learned, when home roasting, it pays to have an immediate back-up for every piece of equipment you have, so I still am in the game with one down & two to go! Happy roastin', Mike F.