I just updated my turret to the 4-die version--the principle for tuning them is the same, but they do react a bit differently.
First, you can bring the turret into nominal adjustment by raising the ram above the index rod twist and then move the turret to set it properly. I assume you have that done, and now are tweaking the index so it settles into the detents repeatedly.
1. The Lee video description is correct--and here's some things to keep in mind:
a. my update index rod is a very malleable steel--and even a fixed-size wrench can mar it. GRASP IT HIGH, JUST UNDER THE TURRET, so if you do mar it, the ratchet in the ram indexer assembly will not touch the mar. If it does--bingo; failure sooner than later.
b. you may find it easier to use a socket and wrench to grip and turn the upper square (turret) nut to get precise adjustments. As you adjust the indexing nut bring it "up", not down, so that the turret top flange barely contacts the frame when the press is sitting. Now oil that flange. This will create the least drag and make operation much smoother.
If you mar the rod, then sand off any burrs, etc., then put a light coating of oil on it. PUT A BIG DROP OF OIL ON THE TURRET BASE.
If you short-stroke the press and try to move things while the ram is in the index rod twist, you will damage the ratchet. You get an extra one; buy more from Lee--and if this is the standard turret 4-die setup, buy another ram indexer assembly. (Lee has been known to send these free, or for postage only, BTW.) Likewise, ignore the 'crooked' ram assembly and index rod "off center"--it doesn't matter for accurate and reliable operation, and there is a design defect in the (4-hole) assembly that makes it impossible to stay 'square' to the press.
Finally, plan on simply cleaning up the press and re-oiling the rod, the base 'dot,' and turret flange every 500 rounds or so. Get rid of the powder grunge and re-oil it.
Any other questions, feel free to ask.
Jim H.