A pitch too High!

terrible, mijostyn is right. When putting the needle onto the center of the laser disc or blank record, adjust the anti skate so that the needle stays in place. Then just slightly adjust the anti skate so the the arm then drifts very slowly towards the spindle.

However, I did exactly that and was getting distortion. So I found that by adjusting the anti skate so that the needle stayed in the center of the laser disc and without drift, that this gave me distortion free results. Do not set your anti skate this way until you've tried doing it as described above.

That test is misleading. You have to watch very closely to be sure the stylus is skating on the vinyl and not following the groove. In your video it is clearly in the lead-out groove. Some test records have a blank side for this. Best is a 45 LP cut on one side only, leaving the other completely blank. 

All this side bias testing seems to me is missing the point. Because if the problem was side bias you would be hearing it from one speaker or the other, or more in one than the other. Like Mike said, right is outside groove wall away from the spindle, left is inside closer. If you are hearing it equally from both channels (or close enough you can't tell) then your side bias (anti-skate) is correct and it is something else.

However, I did exactly that and was getting distortion. So I found that by adjusting the anti skate so that the needle stayed in the center of the laser disc and without drift, that this gave me distortion free results. Do not set your anti skate this way until you've tried doing it as described above.

@terrible You can see that depending on the arm you might get different results. A person that I know that makes the Triplanar arm once told me that there really isn't a standard for anti-skate settings. So what works fine for one arm may not for another. So don't regard this comment is contradiction so much as the point that you might have to goof off with this setting to see what works best for you.

There is no standard for anti-skate because of how it works. Skating forces are generated by drag on a overhung stylus. This is why tangential tracking arms have no side bias. Since they are tangential the only force is in line with the arm and there is zero skating force generated.

Pivoted arms all generate skating forces because of the overhang. The amount of skating force varies constantly depending on how heavily modulated the groove is, how high the tracking force is, and how gracefully the cartridge traces the groove. The Soundmith Strain Gauge for example is famously low moving mass, low wear and a superb tracker. Sure enough I had to reduce anti-skate a lot when going from Koetsu to SG. 

Checking on a blank record is a pretty good starting point. Probably good enough to be one and done. But no one setting is ever perfect all the way across a record. All we can do is play listen adjust, play listen adjust. It is like setting sub levels, after a while you figure out what is a good all-around and then you are done.

I have these same test records. Probably the same tracks are on them. Don't know. Never bothered. Play music. Works just fine.

@mijostyn I just got Joni Mitchell - Live at Carnegie Hall, there is a blank side on the third record. I'll use that. Just reconfirming, since so many things are being said, do I put down the stylus on a rotating blank record at the centre or at the assumed run-out area? And then watch it drift slowly towards the spindle?

For the laserdisc method, I found a video of an Indian guy, he used a CD. Though I don't have a blank disk, can I use one like this?: