Very similar to the Lee version. I control my case length by screwing with the case length guide in or out to get the length I want. Typically I get several cases that need to be cut, put a little blue lock tite on the case length guide threads, cut a case. Measure the cut case. Move the case length guide in or out as needed. Cut and measure, move guide, rinse and repeat until you have the desired case length. Then I let the lock tite dry for 12 + hours. Should be good to go.
As for cutting them short? Remember the shorter the case the less case neck you have holding your bullet tight and straight. Both very important to accuracy and powder burn, especially in auto feeders.