Several things to check.
First, lube. I use just the slightest bit of lithium grease on the inner diameter circular hole on the shellplate. Also, just the slightest touch on the end of the indexing rod. Basically, I have a tiny dab on my finger and wipe a thin layer onto the metal. Don't overdo it -- more is not always better!
Second, the indexing rod has a slight bevel on one just side of it. As you look towards the press, that bevel should face to the right (towards the O.D. of the shellplate). If it is facing left, up, or down, you need to adjust the orientation.
Bevel:
Orientation to the right:
Third, check your carrier alignment. It looks good in the video, and rarely goes out of alignment, but review the manual and online Lee video on carrier alignment. Basically make sure the midpoint of the flipper on the indexing rod touches the slanted frame extension when the carrier is halfway raised.
Like this:
Fourth (and most likely), check the Indexing Rod length. The little
Indexing Flipper screws in and out on the
Indexing Rod, either shortening or lengthening the entire indexer length.
A shorter indexer really cams in and locks the shellplate forcefully. A longer indexer does not lock it as forcefully. There is detailed discussion of adjusting the indexer length here:
http://forums.loadmastervideos.com/foru ... .php?t=489" onclick="window.open(this.href);return false; (look at my second post where I describe my solution).
And here:
http://forums.loadmastervideos.com/foru ... .php?t=102" onclick="window.open(this.href);return false;
When I looked again at your video, your flipper is screwed all the way in. You probably need to loosen the flipper at least one full turn, maybe two or three, but read the threads above to understand how and why. Look at the number of threads shown on my indexer:
Finally, I wanted to use up some nickel brass this morning. (Since most people prefer purchasing brass cases and do not want to purchase nickel, I'll sell excess brass cases and keep any nickel cases I get and use them up.) These are bullets I cast for myself, lubed them and loaded them in my once-fired Winchester Ranger T-series nickel cases. Since I was taking pictures anyway . . .
Shiny! 
