Welcome aboard Reggy.
There is for lack of a better term, a slug which rides the inside of the seating die, between the stem and the actual bullet guide/seating plug. That "slug" is free floating inside the die and with the stem backed way out, it can get cockeyed in the race it slides in and bind up. There are two corrective action approaches. You can shake the die up and down while listening and you'll hear a distinct sound when it drops into it's proper position. after that, avoid shaking it up and down, or inverting it until you have your seating plug adjusted properly for the seating depth you prefer. Once the stem is screwed down far enough to produce that depth, there is a lot less travel in that "slug" and the chance of it getting misaligned goes down significantly.
The second approach is disassemble the die, paying close attention to the orientation of the slug so you don't put it back in upside down. While you have it out, give the outside surface a little polishing before reassembly. That reduces the chance of it binding. If you feel a little braver, remove the retaining clip and remove the guide/seating plug. Polish that as well on the outside. Now. Carefully reassemble using last out, first in method and when you drop the "slug" down into the body look at how far it drops down. Holding the die as vertical as possible, jump the die body up and down a few times and see if the slug drops down further. Further is good. Once you feel it is all the way down, reinsert the adjusting stem and screw it all the way down.
To adjust the seating stem for your seating depth choice, place a bullet on top of the case as if to seat it. Run your press ram up until the seating plug stops on the bullet ready to push it in.Back out the seating stem and raise the ram to take up the newly created additional space. Adjust the stem out further, repeating the procedure. Once it is backed out so far that the ram is fully extended, you can then start screwing it in to achieve your desired seating depth.
When readjusting for a different bullet profile, don't back out the seating stem a long way, just enough to not seat the new bullet all the way. By doing that, you will not leave enough room for the "slug"to get misaligned again. The flip of the coin is to just learn by feel and sound, when you have gotten the slug to drop down to its proper resting place. If you're still awake after reading this long explanation, you will be off to a good start.